Mojo: Change the blink variant from "wtf" to "blink".

third_party/WebKit/public/blink.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 88 matching lines @@
         {
             # GN version: //third_party/WebKit/public:mojo_bindings_wtf
             # (generated by //third_party/WebKit/public:mojo_bindings)
             'target_name': 'mojo_bindings_blink_mojom',
             'type': 'none',
             'variables': {
                 'mojom_files': [
                     '<@(blink_mojo_sources)',
                     '<@(blink_android_mojo_sources)',
                 ],
-                'mojom_variant': 'wtf',
+                'mojom_variant': 'blink',
                 'for_blink': 'true',
             },
             'includes': [
                 '../../../mojo/mojom_bindings_generator_explicit.gypi',
             ],
         },
         {
             # GN version: //third_party/WebKit/public:mojo_bindings
             'target_name': 'mojo_bindings_mojom',
             'type': 'none',
@@ skipping 33 matching lines @@
                     'type': 'static_library',
                     'dependencies': [
                         'android_mojo_bindings_mojom',
                         '../../../mojo/mojo_public.gyp:mojo_bindings_java',
                     ],
                 },
             ],
         }],
     ],
 }