Rename RenderMediaControlsChromium to RenderMediaControls

Source/core/core.gypi

 {
     'variables': {
         'core_idl_files': [
             'css/CSS.idl',
             'css/CSSCharsetRule.idl',
             'css/CSSFontFaceLoadEvent.idl',
             'css/CSSFontFaceRule.idl',
             'css/CSSHostRule.idl',
             'css/CSSImportRule.idl',
             'css/CSSKeyframeRule.idl',
@@ skipping 1415 matching lines @@
             'rendering/RenderListBox.h',
             'rendering/RenderListItem.cpp',
             'rendering/RenderListMarker.cpp',
             'rendering/RenderListMarker.h',
             'rendering/RenderMarquee.cpp',
             'rendering/RenderMarquee.h',
             'rendering/RenderMedia.cpp',
             'rendering/RenderMedia.h',
             'rendering/RenderMediaControlElements.cpp',
             'rendering/RenderMediaControlElements.h',
-            'rendering/RenderMediaControlsChromium.cpp',
-            'rendering/RenderMediaControlsChromium.h',
+            'rendering/RenderMediaControls.cpp',
+            'rendering/RenderMediaControls.h',
             'rendering/RenderMenuList.cpp',
             'rendering/RenderMenuList.h',
             'rendering/RenderMeter.cpp',
             'rendering/RenderMeter.h',
             'rendering/RenderMultiColumnBlock.cpp',
             'rendering/RenderMultiColumnBlock.h',
             'rendering/RenderMultiColumnFlowThread.cpp',
             'rendering/RenderMultiColumnFlowThread.h',
             'rendering/RenderMultiColumnSet.cpp',
             'rendering/RenderMultiColumnSet.h',
@@ skipping 2415 matching lines @@
                 'bison_exe': 'bison',
                 # We specify a preprocess so it happens locally and won't get
                 # distributed to goma.
                 # FIXME: /usr/bin/gcc won't exist on OSX forever. We want to
                 # use /usr/bin/clang once we require Xcode 4.x.
                 'preprocessor': '--preprocessor "/usr/bin/gcc -E -P -x c++"'
               }],
          ],
     }
 }