Remove downloadAttribute from DocumentLoader
https://bugs.webkit.org/show_bug.cgi?id=210493

Patch by Rob Buis <rbuis@igalia.com> on 2020-04-28
Reviewed by Darin Adler.

Remove downloadAttribute from DocumentLoader since this
can be obtained from the NavigationAction.

* loader/DocumentLoader.h:
(WebCore::DocumentLoader::downloadAttribute const):
(WebCore::DocumentLoader::setDownloadAttribute): Deleted.
* loader/FrameLoader.cpp:
(WebCore::FrameLoader::loadURL):
(WebCore::FrameLoader::loadWithNavigationAction):
(WebCore::FrameLoader::loadPostRequest):
* loader/FrameLoader.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@260843 268f45cc-cd09-0410-ab3c-d52691b4dbfc
diff --git a/Source/WebCore/loader/FrameLoader.cpp b/Source/WebCore/loader/FrameLoader.cpp
index 59128be..e1915ba 100644
--- a/Source/WebCore/loader/FrameLoader.cpp
+++ b/Source/WebCore/loader/FrameLoader.cpp
@@ -1418,7 +1418,7 @@
     if (isSystemPreview)
         request.setSystemPreviewInfo(frameLoadRequest.systemPreviewInfo());
 #endif
-    loadWithNavigationAction(request, WTFMove(action), newLoadType, WTFMove(formState), allowNavigationToInvalidURL, frameLoadRequest.downloadAttribute(), [this, isRedirect, sameURL, newLoadType, protectedFrame = makeRef(m_frame), completionHandler = completionHandlerCaller.release()] () mutable {
+    loadWithNavigationAction(request, WTFMove(action), newLoadType, WTFMove(formState), allowNavigationToInvalidURL, [this, isRedirect, sameURL, newLoadType, protectedFrame = makeRef(m_frame), completionHandler = completionHandlerCaller.release()] () mutable {
         if (isRedirect) {
             m_quickRedirectComing = false;
             if (m_provisionalDocumentLoader)
@@ -1495,12 +1495,11 @@
     load(loader.get());
 }
 
-void FrameLoader::loadWithNavigationAction(const ResourceRequest& request, NavigationAction&& action, FrameLoadType type, RefPtr<FormState>&& formState, AllowNavigationToInvalidURL allowNavigationToInvalidURL, const String& downloadAttribute, CompletionHandler<void()>&& completionHandler)
+void FrameLoader::loadWithNavigationAction(const ResourceRequest& request, NavigationAction&& action, FrameLoadType type, RefPtr<FormState>&& formState, AllowNavigationToInvalidURL allowNavigationToInvalidURL, CompletionHandler<void()>&& completionHandler)
 {
     FRAMELOADER_RELEASE_LOG_IF_ALLOWED(ResourceLoading, "loadWithNavigationAction: frame load started");
 
     Ref<DocumentLoader> loader = m_client->createDocumentLoader(request, defaultSubstituteDataForURL(request.url()));
-    loader->setDownloadAttribute(downloadAttribute);
     applyShouldOpenExternalURLsPolicyToNewDocumentLoader(m_frame, loader, action.initiatedByMainFrame(), action.shouldOpenExternalURLsPolicy());
 
     if (action.lockHistory() == LockHistory::Yes && m_documentLoader)
@@ -3012,13 +3011,13 @@
     if (Document* document = m_frame.document())
         document->contentSecurityPolicy()->upgradeInsecureRequestIfNeeded(workingResourceRequest, ContentSecurityPolicy::InsecureRequestType::Load);
 
-    NavigationAction action { request.requester(), workingResourceRequest, request.initiatedByMainFrame(), loadType, true, event, request.shouldOpenExternalURLsPolicy(), request.downloadAttribute() };
+    NavigationAction action { request.requester(), workingResourceRequest, request.initiatedByMainFrame(), loadType, true, event, request.shouldOpenExternalURLsPolicy(), { } };
     action.setLockHistory(lockHistory);
 
     if (!frameName.isEmpty()) {
         // The search for a target frame is done earlier in the case of form submission.
         if (auto* targetFrame = formState ? nullptr : findFrameForNavigation(frameName)) {
-            targetFrame->loader().loadWithNavigationAction(workingResourceRequest, WTFMove(action), loadType, WTFMove(formState), allowNavigationToInvalidURL, { }, WTFMove(completionHandler));
+            targetFrame->loader().loadWithNavigationAction(workingResourceRequest, WTFMove(action), loadType, WTFMove(formState), allowNavigationToInvalidURL, WTFMove(completionHandler));
             return;
         }
 
@@ -3031,7 +3030,7 @@
 
     // must grab this now, since this load may stop the previous load and clear this flag
     bool isRedirect = m_quickRedirectComing;
-    loadWithNavigationAction(workingResourceRequest, WTFMove(action), loadType, WTFMove(formState), allowNavigationToInvalidURL, { }, [this, isRedirect, protectedFrame = makeRef(m_frame), completionHandler = WTFMove(completionHandler)] () mutable {
+    loadWithNavigationAction(workingResourceRequest, WTFMove(action), loadType, WTFMove(formState), allowNavigationToInvalidURL, [this, isRedirect, protectedFrame = makeRef(m_frame), completionHandler = WTFMove(completionHandler)] () mutable {
         if (isRedirect) {
             m_quickRedirectComing = false;
             if (m_provisionalDocumentLoader)