Remove ElementTimeControl IDL interface

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/CSSMediaRule.idl',
@@ skipping 3251 matching lines @@
             'rendering/svg/SVGTextMetrics.cpp',
             'rendering/svg/SVGTextMetrics.h',
             'rendering/svg/SVGTextMetricsBuilder.cpp',
             'rendering/svg/SVGTextMetricsBuilder.h',
             'rendering/svg/SVGTextQuery.cpp',
             'rendering/svg/SVGTextQuery.h',
             'rendering/svg/SVGTextRunRenderingContext.cpp',
             'rendering/svg/SVGTextRunRenderingContext.h',
             'svg/ColorDistance.cpp',
             'svg/ColorDistance.h',
-            'svg/ElementTimeControl.h',
             'svg/GradientAttributes.h',
             'svg/LinearGradientAttributes.h',
             'svg/PatternAttributes.h',
             'svg/RadialGradientAttributes.h',
             'svg/SVGAElement.cpp',
             'svg/SVGAElement.h',
             'svg/SVGAltGlyphDefElement.cpp',
             'svg/SVGAltGlyphDefElement.h',
             'svg/SVGAltGlyphElement.cpp',
             'svg/SVGAltGlyphElement.h',
@@ skipping 425 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++"'
               }],
          ],
     }
 }