Break core/platform/network dependency on core

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 2081 matching lines @@
             'events/WheelEvent.h',
             'events/WindowEventContext.cpp',
             'events/WindowEventContext.h',
         ],
         'webcore_html_files': [
             'html/ClassList.cpp',
             'html/ClassList.h',
             'html/DOMFormData.cpp',
             'html/DOMFormData.h',
             'html/FormAssociatedElement.cpp',
+            'html/FormDataList.cpp',
+            'html/FormDataList.h',
             'html/HTMLAllCollection.cpp',
             'html/HTMLAllCollection.h',
             'html/HTMLAnchorElement.cpp',
             'html/HTMLAnchorElement.h',
             'html/HTMLAppletElement.cpp',
             'html/HTMLAreaElement.cpp',
             'html/HTMLAreaElement.h',
             'html/HTMLAudioElement.cpp',
             'html/HTMLAudioElement.h',
             'html/HTMLBDIElement.h',
@@ skipping 900 matching lines @@
             'platform/mediastream/RTCVoidRequest.h',
             'platform/mock/GeolocationClientMock.cpp',
             'platform/mock/PlatformSpeechSynthesizerMock.cpp',
             'platform/mock/PlatformSpeechSynthesizerMock.h',
             'platform/mock/ScrollbarThemeMock.cpp',
             'platform/mock/ScrollbarThemeMock.h',
             'platform/mock/ScrollbarThemeOverlayMock.h',
             'platform/network/FormData.cpp',
             'platform/network/FormDataBuilder.cpp',
             'platform/network/FormDataBuilder.h',
-            'platform/network/FormDataList.cpp',
-            'platform/network/FormDataList.h',
             'platform/network/ResourceRequest.cpp',
             'platform/network/ResourceRequest.h',
             'platform/network/ResourceResponse.cpp',
             'platform/network/ResourceResponse.h',
             'platform/text/RegularExpression.cpp',
         ],
         'webcore_platform_geometry_files': [
             'platform/graphics/FloatPolygon.cpp',
         ],
         'webcore_svg_files': [
@@ skipping 614 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++"'
               }],
          ],
     }
 }