Translate viewport related meta tags into @viewport descriptors as suggested by the CSS Device Adap…

Source/core/core.gypi

 {
     'variables': {
         'deprecated_perl_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 2140 matching lines @@
             'html/HTMLLegendElement.h',
             'html/HTMLLinkElement.cpp',
             'html/HTMLLinkElement.h',
             'html/HTMLMapElement.cpp',
             'html/HTMLMapElement.h',
             'html/HTMLMarqueeElement.cpp',
             'html/HTMLMarqueeElement.h',
             'html/HTMLMediaElement.cpp',
             'html/HTMLMenuElement.cpp',
             'html/HTMLMenuElement.h',
-            'html/HTMLMetaElement.cpp',
             'html/HTMLMetaElement.h',
             'html/HTMLMeterElement.cpp',
             'html/HTMLMeterElement.h',
             'html/HTMLModElement.cpp',
             'html/HTMLModElement.h',
             'html/HTMLNameCollection.cpp',
             'html/HTMLNameCollection.h',
             'html/HTMLOListElement.cpp',
             'html/HTMLOListElement.h',
             'html/HTMLObjectElement.cpp',
@@ skipping 1664 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++"'
               }],
          ],
     }
 }