Share link header parsing code between blink and content.

third_party/WebKit/Source/core/core.gypi

 {
     'includes': [
         'core_generated.gypi',
     ],
     'variables': {
         # Files for which bindings (.cpp and .h files) will be generated
         'core_idl_files': [
             'animation/KeyframeEffect.idl',
             'animation/EffectModel.idl',
             'animation/AnimationEffectReadOnly.idl',
@@ skipping 1898 matching lines @@
             'loader/FrameFetchContext.h',
             'loader/FrameLoadRequest.h',
             'loader/FrameLoader.cpp',
             'loader/FrameLoaderStateMachine.cpp',
             'loader/HistoryItem.cpp',
             'loader/HistoryItem.h',
             'loader/HttpEquiv.cpp',
             'loader/HttpEquiv.h',
             'loader/ImageLoader.cpp',
             'loader/ImageLoader.h',
-            'loader/LinkHeader.cpp',
             'loader/LinkLoader.cpp',
             'loader/LinkLoader.h',
             'loader/LinkLoaderClient.h',
             'loader/LinkPreloadResourceClients.cpp',
             'loader/LinkPreloadResourceClients.h',
             'loader/MixedContentChecker.cpp',
             'loader/MixedContentChecker.h',
             'loader/NavigationPolicy.cpp',
             'loader/NavigationPolicy.h',
             'loader/NavigationScheduler.cpp',
@@ skipping 2153 matching lines @@
             'layout/OverflowModelTest.cpp',
             'layout/PaginationTest.cpp',
             'layout/PaintContainmentTest.cpp',
             'layout/ScrollAnchorTest.cpp',
             'layout/VisualRectMappingTest.cpp',
             'layout/compositing/CompositedLayerMappingTest.cpp',
             'layout/shapes/BoxShapeTest.cpp',
             'layout/svg/LayoutSVGRootTest.cpp',
             'loader/DocumentLoadTimingTest.cpp',
             'loader/FrameFetchContextTest.cpp',
-            'loader/LinkHeaderTest.cpp',
             'loader/LinkLoaderTest.cpp',
             'loader/MixedContentCheckerTest.cpp',
             'loader/TextResourceDecoderBuilderTest.cpp',
             'loader/ThreadableLoaderTest.cpp',
             'origin_trials/OriginTrialContextTest.cpp',
             'page/ChromeClientTest.cpp',
             'page/ContextMenuControllerTest.cpp',
             'page/EventSourceParserTest.cpp',
             'page/FocusControllerTest.cpp',
             'page/NetworkStateNotifierTest.cpp',
@@ skipping 22 matching lines @@
             'svg/UnsafeSVGAttributeSanitizationTest.cpp',
             'testing/PrivateScriptTestTest.cpp',
             'timing/MemoryInfoTest.cpp',
             'timing/PerformanceBaseTest.cpp',
             'workers/WorkerThreadTest.cpp',
             'workers/WorkerThreadTestHelper.h',
             'xml/parser/SharedBufferReaderTest.cpp',
         ],
     }
 }