Create a minimal webkit_common static library for use in browser process

Source/WebKit/chromium/WebKit.gyp

Index: Source/WebKit/chromium/WebKit.gyp
diff --git a/Source/WebKit/chromium/WebKit.gyp b/Source/WebKit/chromium/WebKit.gyp
index 8c9a225d1cc45b01d4c71515c53afef39c97f319..d490ddf0a18583cf5b04582ff019ac43fe45431f 100644
--- a/Source/WebKit/chromium/WebKit.gyp
+++ b/Source/WebKit/chromium/WebKit.gyp
@@ -64,6 +64,7 @@
             ],
             'defines': [
                 'WEBKIT_IMPLEMENTATION=1',
+                'INSIDE_WEBKIT',

[jamesr, 2013/06/06 21:47:56]

this is needed in order to build the blink API as >1 DLL.  In the API headers,
we have to be able to distinguish between 'will link into webkit.dll' and 'is
inside the webkit repository and has access to WTF'

             ],
             'sources': [
                 '<@(webcore_platform_support_files)',
@@ -399,7 +400,6 @@
                 'src/WebCache.cpp',
                 'src/WebCachedURLRequest.cpp',
                 'src/WebColorName.cpp',
-                'src/WebCommon.cpp',
                 'src/WebCrossOriginPreflightResultCache.cpp',
                 'src/WebDOMActivityLogger.cpp',
                 'src/WebDOMCustomEvent.cpp',
@@ -561,7 +561,6 @@
                 ['component=="shared_library"', {
                     'defines': [
                         'WEBKIT_DLL',
-                        'WEBKIT_IMPLEMENTATION=1',
                     ],
                     'dependencies': [
                         '../../core/core.gyp:webcore_derived',