Add utility method for WebString to base::FilePath conversion

third_party/WebKit/Source/platform/blink_platform_tests.gyp

 #
 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 62 matching lines @@
         '../wtf/wtf_tests.gyp:wtf_unittest_helpers',
         '<(DEPTH)/base/base.gyp:test_support_base',
         '<(DEPTH)/cc/cc.gyp:cc',
         '<(DEPTH)/cc/cc_tests.gyp:cc_test_support',
         '<(DEPTH)/cc/blink/cc_blink.gyp:cc_blink',
         '<(DEPTH)/skia/skia.gyp:skia',
         '<(DEPTH)/third_party/harfbuzz-ng/harfbuzz.gyp:harfbuzz-ng',
         '<(DEPTH)/ui/gfx/gfx.gyp:gfx',
         '<(DEPTH)/ui/gfx/gfx.gyp:gfx_geometry',
         '<(DEPTH)/url/url.gyp:url_lib',
-        'blink_platform.gyp:blink_common',
         'blink_platform.gyp:blink_platform',
       ],
       'defines': [
         'INSIDE_BLINK',
       ],
       'include_dirs': [
         '<(SHARED_INTERMEDIATE_DIR)/blink',
       ],
       'sources': [
         'testing/RunAllTests.cpp',
         '<@(platform_test_files)',
       ],
       'conditions': [
         ['OS=="android" and gtest_target_type == "shared_library"', {
           'type': 'shared_library',
           'dependencies': [
             '<(DEPTH)/testing/android/native_test.gyp:native_test_native_code',
             '<(DEPTH)/tools/android/forwarder2/forwarder.gyp:forwarder2',
           ],
         }],
       ],
     },
     {
       'target_name': 'blink_platform_test_support',
       'type': 'static_library',
       'dependencies': [
         '../config.gyp:config',
         '../wtf/wtf.gyp:wtf',
+        'blink_platform.gyp:blink_common',
         'blink_platform.gyp:blink_platform',
         '<(DEPTH)/testing/gmock.gyp:gmock',
       ],
       'defines': [
         'INSIDE_BLINK',
       ],
       'include_dirs': [
         '<(SHARED_INTERMEDIATE_DIR)/blink',
       ],
       'sources': [
@@ skipping 89 matching lines @@
             '../../../../build/isolate.gypi',
           ],
           'sources': [
             'blink_platform_unittests.isolate',
           ],
         }
       ],
     }],
   ],
 }