Source/WebCore/loader/PingLoader.cpp - WebKit - Git at Google

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2015 Roopesh Chander (roop@roopc.net)
  * Copyright (C) 2015-2021 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
  * copyright notice, this list of conditions and the following disclaimer
  * in the documentation and/or other materials provided with the
  * distribution.
  *     * Neither the name of Google Inc. nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */

 #include "config.h"
 #include "PingLoader.h"

 #include "CachedResourceLoader.h"
 #include "CachedResourceRequest.h"
 #include "ContentRuleListResults.h"
 #include "ContentSecurityPolicy.h"
 #include "Document.h"
 #include "Frame.h"
 #include "FrameLoader.h"
 #include "FrameLoaderClient.h"
 #include "HTTPHeaderValues.h"
 #include "InspectorInstrumentation.h"
 #include "LoaderStrategy.h"
 #include "NetworkLoadMetrics.h"
 #include "Page.h"
 #include "PlatformStrategies.h"
 #include "ProgressTracker.h"
 #include "ResourceError.h"
 #include "ResourceHandle.h"
 #include "ResourceLoadInfo.h"
 #include "ResourceRequest.h"
 #include "ResourceResponse.h"
 #include "SecurityOrigin.h"
 #include "SecurityPolicy.h"
 #include "UserContentController.h"
 #include <wtf/text/CString.h>

 namespace WebCore {

 #if ENABLE(CONTENT_EXTENSIONS)

 // Returns true if we should block the load.
 static bool processContentRuleListsForLoad(const Frame& frame, ResourceRequest& request, OptionSet<ContentExtensions::ResourceType> resourceType)
 {
     auto* documentLoader = frame.loader().documentLoader();
     if (!documentLoader)
         return false;
     auto* page = frame.page();
     if (!page)
         return false;
     auto results = page->userContentProvider().processContentRuleListsForLoad(*page, request.url(), resourceType, *documentLoader);
     bool result = results.summary.blockedLoad;
     ContentExtensions::applyResultsToRequest(WTFMove(results), page, request);
     return result;
 }

 #endif

 void PingLoader::loadImage(Frame& frame, const URL& url)
 {
     ASSERT(frame.document());
     auto& document = *frame.document();

     if (!document.securityOrigin().canDisplay(url)) {
         FrameLoader::reportLocalLoadFailed(&frame, url.string());
         return;
     }

     if (!portAllowed(url)) {
         FrameLoader::reportBlockedLoadFailed(frame, url);
         return;
     }

     ResourceRequest request(url);
 #if ENABLE(CONTENT_EXTENSIONS)
     if (processContentRuleListsForLoad(frame, request, ContentExtensions::ResourceType::Image))
         return;
 #endif

     document.contentSecurityPolicy()->upgradeInsecureRequestIfNeeded(request, ContentSecurityPolicy::InsecureRequestType::Load);

     request.setHTTPHeaderField(HTTPHeaderName::CacheControl, HTTPHeaderValues::maxAge0());

     HTTPHeaderMap originalRequestHeader = request.httpHeaderFields();

     String referrer = SecurityPolicy::generateReferrerHeader(document.referrerPolicy(), request.url(), frame.loader().outgoingReferrer());
     if (!referrer.isEmpty())
         request.setHTTPReferrer(referrer);
     frame.loader().updateRequestAndAddExtraFields(request, IsMainResource::No);

     startPingLoad(frame, request, WTFMove(originalRequestHeader), ShouldFollowRedirects::Yes, ContentSecurityPolicyImposition::DoPolicyCheck, ReferrerPolicy::EmptyString);
 }

 // http://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#hyperlink-auditing
 void PingLoader::sendPing(Frame& frame, const URL& pingURL, const URL& destinationURL)
 {
     ASSERT(frame.document());

     if (!pingURL.protocolIsInHTTPFamily())
         return;

     ResourceRequest request(pingURL);
     request.setRequester(ResourceRequest::Requester::Ping);

 #if ENABLE(CONTENT_EXTENSIONS)
     if (processContentRuleListsForLoad(frame, request, ContentExtensions::ResourceType::Ping))
         return;
 #endif

     auto& document = *frame.document();
     document.contentSecurityPolicy()->upgradeInsecureRequestIfNeeded(request, ContentSecurityPolicy::InsecureRequestType::Load);

     request.setHTTPMethod("POST"_s);
     request.setHTTPContentType("text/ping"_s);
     request.setHTTPBody(FormData::create("PING"));
     request.setHTTPHeaderField(HTTPHeaderName::CacheControl, HTTPHeaderValues::maxAge0());

     HTTPHeaderMap originalRequestHeader = request.httpHeaderFields();

     auto& sourceOrigin = document.securityOrigin();
     FrameLoader::addHTTPOriginIfNeeded(request, SecurityPolicy::generateOriginHeader(document.referrerPolicy(), request.url(), sourceOrigin));

     frame.loader().updateRequestAndAddExtraFields(request, IsMainResource::No);
     request.setHTTPHeaderField(HTTPHeaderName::PingTo, destinationURL.string());
     if (!SecurityPolicy::shouldHideReferrer(pingURL, frame.loader().outgoingReferrer()))
         request.setHTTPHeaderField(HTTPHeaderName::PingFrom, document.url().string());

     startPingLoad(frame, request, WTFMove(originalRequestHeader), ShouldFollowRedirects::Yes, ContentSecurityPolicyImposition::DoPolicyCheck, ReferrerPolicy::NoReferrer);
 }

 void PingLoader::sendViolationReport(Frame& frame, const URL& reportURL, Ref<FormData>&& report, ViolationReportType reportType)
 {
     ASSERT(frame.document());

     ResourceRequest request(reportURL);
 #if ENABLE(CONTENT_EXTENSIONS)
     if (processContentRuleListsForLoad(frame, request, ContentExtensions::ResourceType::CSPReport))
         return;
 #endif

     auto& document = *frame.document();
     document.contentSecurityPolicy()->upgradeInsecureRequestIfNeeded(request, ContentSecurityPolicy::InsecureRequestType::Load);

     request.setHTTPMethod("POST"_s);
     request.setHTTPBody(WTFMove(report));
     switch (reportType) {
     case ViolationReportType::ContentSecurityPolicy:
         request.setHTTPContentType("application/csp-report"_s);
         break;
     case ViolationReportType::StandardReportingAPIViolation:
         request.setHTTPContentType("application/reports+json"_s);
         break;
     }

     bool removeCookies = true;
     if (document.securityOrigin().isSameSchemeHostPort(SecurityOrigin::create(reportURL).get()))
         removeCookies = false;
     if (removeCookies)
         request.setAllowCookies(false);

     HTTPHeaderMap originalRequestHeader = request.httpHeaderFields();

     if (reportType != ViolationReportType::StandardReportingAPIViolation)
         frame.loader().updateRequestAndAddExtraFields(request, IsMainResource::No);

     String referrer = SecurityPolicy::generateReferrerHeader(document.referrerPolicy(), reportURL, frame.loader().outgoingReferrer());
     if (!referrer.isEmpty())
         request.setHTTPReferrer(referrer);

     startPingLoad(frame, request, WTFMove(originalRequestHeader), ShouldFollowRedirects::No, ContentSecurityPolicyImposition::SkipPolicyCheck, ReferrerPolicy::EmptyString, reportType);
 }

 void PingLoader::startPingLoad(Frame& frame, ResourceRequest& request, HTTPHeaderMap&& originalRequestHeaders, ShouldFollowRedirects shouldFollowRedirects, ContentSecurityPolicyImposition policyCheck, ReferrerPolicy referrerPolicy, std::optional<ViolationReportType> violationReportType)
 {
     auto identifier = ResourceLoaderIdentifier::generate();
     // FIXME: Why activeDocumentLoader? I would have expected documentLoader().
     // It seems like the PingLoader should be associated with the current
     // Document in the Frame, but the activeDocumentLoader will be associated
     // with the provisional DocumentLoader if there is a provisional
     // DocumentLoader.
     bool shouldUseCredentialStorage = frame.loader().client().shouldUseCredentialStorage(frame.loader().activeDocumentLoader(), identifier);
     ResourceLoaderOptions options;
     options.credentials = shouldUseCredentialStorage ? FetchOptions::Credentials::Include : FetchOptions::Credentials::Omit;
     options.redirect = shouldFollowRedirects == ShouldFollowRedirects::Yes ? FetchOptions::Redirect::Follow : FetchOptions::Redirect::Error;
     options.keepAlive = true;
     options.contentSecurityPolicyImposition = policyCheck;
     options.referrerPolicy = referrerPolicy;
     options.sendLoadCallbacks = SendCallbackPolicy::SendCallbacks;
     options.cache = FetchOptions::Cache::NoCache;

     // https://www.w3.org/TR/reporting/#try-delivery
     if (violationReportType == ViolationReportType::StandardReportingAPIViolation) {
         options.credentials = FetchOptions::Credentials::SameOrigin;
         options.mode = FetchOptions::Mode::Cors;
         options.serviceWorkersMode = ServiceWorkersMode::None;
         options.destination = FetchOptions::Destination::Report;
     }

     // FIXME: Deprecate the ping load code path.
     if (platformStrategies()->loaderStrategy()->usePingLoad()) {
         InspectorInstrumentation::willSendRequestOfType(&frame, identifier, frame.loader().activeDocumentLoader(), request, InspectorInstrumentation::LoadType::Ping);

         platformStrategies()->loaderStrategy()->startPingLoad(frame, request, WTFMove(originalRequestHeaders), options, policyCheck, [protectedFrame = Ref { frame }, identifier] (const ResourceError& error, const ResourceResponse& response) {
             if (!response.isNull())
                 InspectorInstrumentation::didReceiveResourceResponse(protectedFrame, identifier, protectedFrame->loader().activeDocumentLoader(), response, nullptr);
             if (!error.isNull()) {
                 InspectorInstrumentation::didFailLoading(protectedFrame.ptr(), protectedFrame->loader().activeDocumentLoader(), identifier, error);
                 return;
             }
             InspectorInstrumentation::didFinishLoading(protectedFrame.ptr(), protectedFrame->loader().activeDocumentLoader(), identifier, { }, nullptr);
         });
         return;
     }

     CachedResourceRequest cachedResourceRequest { ResourceRequest { request }, options };
     frame.document()->cachedResourceLoader().requestPingResource(WTFMove(cachedResourceRequest));
 }

 // // https://html.spec.whatwg.org/multipage/origin.html#sanitize-url-report
 String PingLoader::sanitizeURLForReport(const URL& url)
 {
     URL sanitizedURL = url;
     sanitizedURL.removeCredentials();
     sanitizedURL.removeFragmentIdentifier();
     return sanitizedURL.string();
 }

 } // namespace WebCore
	/*
	* Copyright (C) 2010 Google Inc. All rights reserved.
	* Copyright (C) 2015 Roopesh Chander (roop@roopc.net)
	* Copyright (C) 2015-2021 Apple Inc. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are
	* met:
	*
	* * Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* * Redistributions in binary form must reproduce the above
	* copyright notice, this list of conditions and the following disclaimer
	* in the documentation and/or other materials provided with the
	* distribution.
	* * Neither the name of Google Inc. nor the names of its
	* contributors may be used to endorse or promote products derived from
	* this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*
	*/

	#include "config.h"
	#include "PingLoader.h"

	#include "CachedResourceLoader.h"
	#include "CachedResourceRequest.h"
	#include "ContentRuleListResults.h"
	#include "ContentSecurityPolicy.h"
	#include "Document.h"
	#include "Frame.h"
	#include "FrameLoader.h"
	#include "FrameLoaderClient.h"
	#include "HTTPHeaderValues.h"
	#include "InspectorInstrumentation.h"
	#include "LoaderStrategy.h"
	#include "NetworkLoadMetrics.h"
	#include "Page.h"
	#include "PlatformStrategies.h"
	#include "ProgressTracker.h"
	#include "ResourceError.h"
	#include "ResourceHandle.h"
	#include "ResourceLoadInfo.h"
	#include "ResourceRequest.h"
	#include "ResourceResponse.h"
	#include "SecurityOrigin.h"
	#include "SecurityPolicy.h"
	#include "UserContentController.h"
	#include <wtf/text/CString.h>

	namespace WebCore {

	#if ENABLE(CONTENT_EXTENSIONS)

	// Returns true if we should block the load.
	static bool processContentRuleListsForLoad(const Frame& frame, ResourceRequest& request, OptionSet<ContentExtensions::ResourceType> resourceType)
	{
	auto* documentLoader = frame.loader().documentLoader();
	if (!documentLoader)
	return false;
	auto* page = frame.page();
	if (!page)
	return false;
	auto results = page->userContentProvider().processContentRuleListsForLoad(page, request.url(), resourceType, documentLoader);
	bool result = results.summary.blockedLoad;
	ContentExtensions::applyResultsToRequest(WTFMove(results), page, request);
	return result;
	}

	#endif

	void PingLoader::loadImage(Frame& frame, const URL& url)
	{
	ASSERT(frame.document());
	auto& document = *frame.document();

	if (!document.securityOrigin().canDisplay(url)) {
	FrameLoader::reportLocalLoadFailed(&frame, url.string());
	return;
	}

	if (!portAllowed(url)) {
	FrameLoader::reportBlockedLoadFailed(frame, url);
	return;
	}

	ResourceRequest request(url);
	#if ENABLE(CONTENT_EXTENSIONS)
	if (processContentRuleListsForLoad(frame, request, ContentExtensions::ResourceType::Image))
	return;
	#endif

	document.contentSecurityPolicy()->upgradeInsecureRequestIfNeeded(request, ContentSecurityPolicy::InsecureRequestType::Load);

	request.setHTTPHeaderField(HTTPHeaderName::CacheControl, HTTPHeaderValues::maxAge0());

	HTTPHeaderMap originalRequestHeader = request.httpHeaderFields();

	String referrer = SecurityPolicy::generateReferrerHeader(document.referrerPolicy(), request.url(), frame.loader().outgoingReferrer());
	if (!referrer.isEmpty())
	request.setHTTPReferrer(referrer);
	frame.loader().updateRequestAndAddExtraFields(request, IsMainResource::No);

	startPingLoad(frame, request, WTFMove(originalRequestHeader), ShouldFollowRedirects::Yes, ContentSecurityPolicyImposition::DoPolicyCheck, ReferrerPolicy::EmptyString);
	}

	// http://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#hyperlink-auditing
	void PingLoader::sendPing(Frame& frame, const URL& pingURL, const URL& destinationURL)
	{
	ASSERT(frame.document());

	if (!pingURL.protocolIsInHTTPFamily())
	return;

	ResourceRequest request(pingURL);
	request.setRequester(ResourceRequest::Requester::Ping);

	#if ENABLE(CONTENT_EXTENSIONS)
	if (processContentRuleListsForLoad(frame, request, ContentExtensions::ResourceType::Ping))
	return;
	#endif

	auto& document = *frame.document();
	document.contentSecurityPolicy()->upgradeInsecureRequestIfNeeded(request, ContentSecurityPolicy::InsecureRequestType::Load);

	request.setHTTPMethod("POST"_s);
	request.setHTTPContentType("text/ping"_s);
	request.setHTTPBody(FormData::create("PING"));
	request.setHTTPHeaderField(HTTPHeaderName::CacheControl, HTTPHeaderValues::maxAge0());

	HTTPHeaderMap originalRequestHeader = request.httpHeaderFields();

	auto& sourceOrigin = document.securityOrigin();
	FrameLoader::addHTTPOriginIfNeeded(request, SecurityPolicy::generateOriginHeader(document.referrerPolicy(), request.url(), sourceOrigin));

	frame.loader().updateRequestAndAddExtraFields(request, IsMainResource::No);
	request.setHTTPHeaderField(HTTPHeaderName::PingTo, destinationURL.string());
	if (!SecurityPolicy::shouldHideReferrer(pingURL, frame.loader().outgoingReferrer()))
	request.setHTTPHeaderField(HTTPHeaderName::PingFrom, document.url().string());

	startPingLoad(frame, request, WTFMove(originalRequestHeader), ShouldFollowRedirects::Yes, ContentSecurityPolicyImposition::DoPolicyCheck, ReferrerPolicy::NoReferrer);
	}

	void PingLoader::sendViolationReport(Frame& frame, const URL& reportURL, Ref<FormData>&& report, ViolationReportType reportType)
	{
	ASSERT(frame.document());

	ResourceRequest request(reportURL);
	#if ENABLE(CONTENT_EXTENSIONS)
	if (processContentRuleListsForLoad(frame, request, ContentExtensions::ResourceType::CSPReport))
	return;
	#endif

	auto& document = *frame.document();
	document.contentSecurityPolicy()->upgradeInsecureRequestIfNeeded(request, ContentSecurityPolicy::InsecureRequestType::Load);

	request.setHTTPMethod("POST"_s);
	request.setHTTPBody(WTFMove(report));
	switch (reportType) {
	case ViolationReportType::ContentSecurityPolicy:
	request.setHTTPContentType("application/csp-report"_s);
	break;
	case ViolationReportType::StandardReportingAPIViolation:
	request.setHTTPContentType("application/reports+json"_s);
	break;
	}

	bool removeCookies = true;
	if (document.securityOrigin().isSameSchemeHostPort(SecurityOrigin::create(reportURL).get()))
	removeCookies = false;
	if (removeCookies)
	request.setAllowCookies(false);

	HTTPHeaderMap originalRequestHeader = request.httpHeaderFields();

	if (reportType != ViolationReportType::StandardReportingAPIViolation)
	frame.loader().updateRequestAndAddExtraFields(request, IsMainResource::No);

	String referrer = SecurityPolicy::generateReferrerHeader(document.referrerPolicy(), reportURL, frame.loader().outgoingReferrer());
	if (!referrer.isEmpty())
	request.setHTTPReferrer(referrer);

	startPingLoad(frame, request, WTFMove(originalRequestHeader), ShouldFollowRedirects::No, ContentSecurityPolicyImposition::SkipPolicyCheck, ReferrerPolicy::EmptyString, reportType);
	}

	void PingLoader::startPingLoad(Frame& frame, ResourceRequest& request, HTTPHeaderMap&& originalRequestHeaders, ShouldFollowRedirects shouldFollowRedirects, ContentSecurityPolicyImposition policyCheck, ReferrerPolicy referrerPolicy, std::optional<ViolationReportType> violationReportType)
	{
	auto identifier = ResourceLoaderIdentifier::generate();
	// FIXME: Why activeDocumentLoader? I would have expected documentLoader().
	// It seems like the PingLoader should be associated with the current
	// Document in the Frame, but the activeDocumentLoader will be associated
	// with the provisional DocumentLoader if there is a provisional
	// DocumentLoader.
	bool shouldUseCredentialStorage = frame.loader().client().shouldUseCredentialStorage(frame.loader().activeDocumentLoader(), identifier);
	ResourceLoaderOptions options;
	options.credentials = shouldUseCredentialStorage ? FetchOptions::Credentials::Include : FetchOptions::Credentials::Omit;
	options.redirect = shouldFollowRedirects == ShouldFollowRedirects::Yes ? FetchOptions::Redirect::Follow : FetchOptions::Redirect::Error;
	options.keepAlive = true;
	options.contentSecurityPolicyImposition = policyCheck;
	options.referrerPolicy = referrerPolicy;
	options.sendLoadCallbacks = SendCallbackPolicy::SendCallbacks;
	options.cache = FetchOptions::Cache::NoCache;

	// https://www.w3.org/TR/reporting/#try-delivery
	if (violationReportType == ViolationReportType::StandardReportingAPIViolation) {
	options.credentials = FetchOptions::Credentials::SameOrigin;
	options.mode = FetchOptions::Mode::Cors;
	options.serviceWorkersMode = ServiceWorkersMode::None;
	options.destination = FetchOptions::Destination::Report;
	}

	// FIXME: Deprecate the ping load code path.
	if (platformStrategies()->loaderStrategy()->usePingLoad()) {
	InspectorInstrumentation::willSendRequestOfType(&frame, identifier, frame.loader().activeDocumentLoader(), request, InspectorInstrumentation::LoadType::Ping);

	platformStrategies()->loaderStrategy()->startPingLoad(frame, request, WTFMove(originalRequestHeaders), options, policyCheck, [protectedFrame = Ref { frame }, identifier] (const ResourceError& error, const ResourceResponse& response) {
	if (!response.isNull())
	InspectorInstrumentation::didReceiveResourceResponse(protectedFrame, identifier, protectedFrame->loader().activeDocumentLoader(), response, nullptr);
	if (!error.isNull()) {
	InspectorInstrumentation::didFailLoading(protectedFrame.ptr(), protectedFrame->loader().activeDocumentLoader(), identifier, error);
	return;
	}
	InspectorInstrumentation::didFinishLoading(protectedFrame.ptr(), protectedFrame->loader().activeDocumentLoader(), identifier, { }, nullptr);
	});
	return;
	}

	CachedResourceRequest cachedResourceRequest { ResourceRequest { request }, options };
	frame.document()->cachedResourceLoader().requestPingResource(WTFMove(cachedResourceRequest));
	}

	// // https://html.spec.whatwg.org/multipage/origin.html#sanitize-url-report
	String PingLoader::sanitizeURLForReport(const URL& url)
	{
	URL sanitizedURL = url;
	sanitizedURL.removeCredentials();
	sanitizedURL.removeFragmentIdentifier();
	return sanitizedURL.string();
	}

	} // namespace WebCore