Move popup menu code from core/platform to WebKit/chromium/src.

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',
@@ skipping 2612 matching lines @@
             'platform/chromium/LanguageChromium.cpp',
             'platform/chromium/LocalizedStringsChromium.cpp',
             'platform/chromium/MemoryUsageSupportChromium.cpp',
             'platform/chromium/MIMETypeRegistryChromium.cpp',
             'platform/chromium/PasteboardChromium.cpp',
             'platform/chromium/PlatformKeyboardEventChromium.cpp',
             'platform/chromium/PlatformScreenChromium.cpp',
             'platform/chromium/PlatformThemeChromiumDefault.cpp',
             'platform/chromium/PlatformThemeChromiumDefault.h',
             'platform/chromium/PlatformSpeechSynthesizerChromium.cpp',
-            'platform/chromium/PopupContainer.cpp',
-            'platform/chromium/PopupContainer.h',
-            'platform/chromium/PopupMenuChromium.cpp',
-            'platform/chromium/PopupMenuChromium.h',
-            'platform/chromium/PopupListBox.cpp',
-            'platform/chromium/PopupListBox.h',
             'platform/chromium/Prerender.cpp',
             'platform/chromium/Prerender.h',
             'platform/chromium/PrerenderHandle.cpp',
             'platform/chromium/SSLKeyGeneratorChromium.cpp',
             'platform/chromium/ScrollbarThemeChromium.cpp',
             'platform/chromium/ScrollbarThemeChromium.h',
             'platform/chromium/ScrollbarThemeChromiumAndroid.cpp',
             'platform/chromium/ScrollbarThemeChromiumAndroid.h',
             'platform/chromium/ScrollbarThemeChromiumDefault.cpp',
             'platform/chromium/ScrollbarThemeChromiumDefault.h',
@@ skipping 1031 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++"'
               }],
          ],
     }
 }