Move webkit_common to its own gyp file

content/content_tests.gypi

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'targets': [
     {
       'target_name': 'test_support_content',
       'type': 'static_library',
       'defines!': ['CONTENT_IMPLEMENTATION'],
@@ skipping 562 matching lines @@
             '../jingle/jingle.gyp:jingle_glue_test_util',
             '../media/media.gyp:shared_memory_support',
             '../third_party/WebKit/public/blink.gyp:blink',
             '../third_party/icu/icu.gyp:icui18n',
             '../third_party/icu/icu.gyp:icuuc',
             '../third_party/leveldatabase/leveldatabase.gyp:leveldatabase',
             '../third_party/libjingle/libjingle.gyp:libjingle',
             '../ui/gl/gl.gyp:gl',
             '../v8/tools/gyp/v8.gyp:v8',
             '../webkit/base/webkit_base.gyp:webkit_base',
+            '../webkit/common/webkit_common.gyp:webkit_common',
             '../webkit/plugins/webkit_plugins.gyp:plugins_common',
             '../webkit/plugins/webkit_plugins.gyp:test_mock_plugin_list',
             '../webkit/storage_browser.gyp:webkit_storage_browser',
             '../webkit/storage_common.gyp:webkit_storage_common',
             '../webkit/storage_renderer.gyp:webkit_storage_renderer',
             '../webkit/support/webkit_support.gyp:glue',
             '../webkit/support/webkit_support.gyp:glue_child',
             '../webkit/support/webkit_support.gyp:glue_common',
             '../webkit/support/webkit_support.gyp:glue_renderer',
             '../webkit/support/webkit_support.gyp:plugins',
-            '../webkit/support/webkit_support.gyp:webkit_common',
             '../webkit/support/webkit_support.gyp:webkit_media',
           ],
         }],
         ['enable_plugins==0', {
           'sources/': [
             ['exclude', '^renderer/pepper/'],
             ['exclude', '^browser/renderer_host/pepper/'],
           ],
           'sources!': [
             'browser/plugin_loader_posix_unittest.cc',
@@ skipping 617 matching lines @@
             'resource_dir': 'shell/android/shell_apk/res',
             'additional_src_dirs': ['public/android/javatests/',],
             'is_test_apk': 1,
           },
           'includes': [ '../build/java_apk.gypi' ],
         },
       ],
     }],
   ],
 }