Implement HTMLMediaElement::srcObject.

Source/core/core.gypi

 {
     'includes': [
       'core_generated.gypi',
     ],
     'variables': {
         # Files for which bindings (.cpp and .h files) will be generated
         'core_idl_files': [
             'animation/Animation.idl',
             'animation/AnimationEffect.idl',
             'animation/AnimationPlayer.idl',
@@ skipping 199 matching lines @@
             'html/HTMLTableElement.idl',
             'html/HTMLTableRowElement.idl',
             'html/HTMLTableSectionElement.idl',
             'html/HTMLTemplateElement.idl',
             'html/HTMLTextAreaElement.idl',
             'html/HTMLTitleElement.idl',
             'html/HTMLTrackElement.idl',
             'html/HTMLUListElement.idl',
             'html/HTMLUnknownElement.idl',
             'html/HTMLVideoElement.idl',
-            'html/ImageData.idl',
+            'html/ImageData.idl',            
             'html/MediaController.idl',
             'html/MediaError.idl',
             'html/MediaKeyError.idl',
             'html/MediaKeyEvent.idl',
             'html/RadioNodeList.idl',
             'html/TextMetrics.idl',
             'html/TimeRanges.idl',
             'html/ValidityState.idl',
             'html/VoidCallback.idl',
             'html/canvas/ANGLEInstancedArrays.idl',
@@ skipping 2154 matching lines @@
             'html/HTMLLIElement.h',
             'html/HTMLLabelElement.cpp',
             'html/HTMLLabelElement.h',
             'html/HTMLLegendElement.cpp',
             'html/HTMLLegendElement.h',
             'html/HTMLLinkElement.cpp',
             'html/HTMLLinkElement.h',
             'html/HTMLMapElement.cpp',
             'html/HTMLMapElement.h',
             'html/HTMLMarqueeElement.cpp',
-            'html/HTMLMarqueeElement.h',
+            'html/HTMLMarqueeElement.h',            
             'html/HTMLMediaElement.cpp',
             'html/HTMLMediaSource.cpp',
             'html/HTMLMediaSource.h',
             'html/HTMLMenuElement.cpp',
             'html/HTMLMenuElement.h',
             'html/HTMLMenuItemElement.cpp',
             'html/HTMLMenuItemElement.h',
             'html/HTMLMetaElement.h',
             'html/HTMLMeterElement.cpp',
             'html/HTMLMeterElement.h',
@@ skipping 87 matching lines @@
             'html/ImageDocument.h',
             'html/LabelableElement.cpp',
             'html/LabelsNodeList.cpp',
             'html/LabelsNodeList.h',
             'html/LinkManifest.cpp',
             'html/LinkManifest.h',
             'html/LinkRelAttribute.cpp',
             'html/LinkRelAttribute.h',
             'html/LinkResource.cpp',
             'html/LinkResource.h',
+            'html/MediaProvider.cpp',
+            'html/MediaProvider.h',
             'html/MediaController.cpp',
             'html/MediaController.h',
             'html/MediaDocument.cpp',
             'html/MediaDocument.h',
             'html/MediaError.h',
             'html/MediaFragmentURIParser.cpp',
             'html/MediaFragmentURIParser.h',
             'html/MediaKeyError.h',
             'html/MediaKeyEvent.cpp',
             'html/MediaKeyEvent.h',
@@ skipping 989 matching lines @@
             'rendering/shapes/BoxShapeTest.cpp',
             'rendering/style/OutlineValueTest.cpp',
             'testing/PrivateScriptTestTest.cpp',
             'streams/ReadableStreamTest.cpp',
             'testing/UnitTestHelpers.cpp',
             'testing/UnitTestHelpers.h',
             'xml/parser/SharedBufferReaderTest.cpp',
         ],
     }
 }