<http://webkit.org/b/51890> Move ResourceLoadPriority.h into WebCore/platform/network

Reviewed by Antti Koivisto.

This is needed to prevent a WebCore/platform policy violation in
my next patch.

* WebCore.gypi: Updated for moved header.
* WebCore.pro: Ditto.
* WebCore.vcproj/WebCore.vcproj: Ditto.
* WebCore.xcodeproj/project.pbxproj: Ditto.
* platform/network/ResourceLoadPriority.h: Renamed from WebCore/loader/ResourceLoadPriority.h.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@75006 268f45cc-cd09-0410-ab3c-d52691b4dbfc
diff --git a/WebCore/WebCore.pro b/WebCore/WebCore.pro
index c614898..3052011 100644
--- a/WebCore/WebCore.pro
+++ b/WebCore/WebCore.pro
@@ -1987,7 +1987,6 @@
     loader/PlaceholderDocument.h \
     loader/ProgressTracker.h \
     loader/ResourceLoader.h \
-    loader/ResourceLoadPriority.h \
     loader/SubresourceLoader.h \
     loader/TextResourceDecoder.h \
     loader/ThreadableLoader.h \
@@ -2176,6 +2175,7 @@
     platform/network/ResourceErrorBase.h \
     platform/network/ResourceHandle.h \
     platform/network/ResourceLoadInfo.h \
+    platform/network/ResourceLoadPriority.h \
     platform/network/ResourceLoadTiming.h \
     platform/network/ResourceRequestBase.h \
     platform/network/ResourceResponseBase.h \