Remove dead CachedMetadata code
https://bugs.webkit.org/show_bug.cgi?id=114093

Reviewed by Geoffrey Garen.

* CMakeLists.txt:
* GNUmakefile.list.am:
* Target.pri:
* WebCore.vcproj/WebCore.vcproj:
* WebCore.vcxproj/WebCore.vcxproj:
* WebCore.vcxproj/WebCore.vcxproj.filters:
* WebCore.xcodeproj/project.pbxproj:
* loader/CachedMetadata.cpp: Removed.
* loader/CachedMetadata.h: Removed.
* loader/ResourceLoader.h:
(ResourceLoader):
* loader/SubresourceLoader.cpp:
* loader/SubresourceLoader.h:
(SubresourceLoader):
* loader/ThreadableLoaderClient.h:
* loader/WorkerThreadableLoader.cpp:
* loader/WorkerThreadableLoader.h:
(MainThreadBridge):
* loader/cache/CachedResource.cpp:
(WebCore::CachedResource::reportMemoryUsage):
* loader/cache/CachedResource.h:
(WebCore):
(CachedResource):
* platform/network/ResourceHandle.cpp:
* platform/network/ResourceHandle.h:
(ResourceHandle):
* platform/network/ResourceHandleClient.h:
(ResourceHandleClient):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@147839 268f45cc-cd09-0410-ab3c-d52691b4dbfc