Move CrossThreadCopier from platform/ to wtf/

third_party/WebKit/Source/core/css/MediaValuesCached.h

 // Copyright 2014 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.
 
 #ifndef MediaValuesCached_h
 #define MediaValuesCached_h
 
 #include "core/CoreExport.h"
 #include "core/css/MediaValues.h"
+#include "wtf/CrossThreadCopier.h"
 
 namespace blink {
 
 class CORE_EXPORT MediaValuesCached final : public MediaValues {
 public:
     struct MediaValuesCachedData final {
         DISALLOW_NEW();
         // Members variables must be thread safe, since they're copied to the parser thread
         double viewportWidth;
         double viewportHeight;
@@ skipping 83 matching lines @@
     void overrideViewportDimensions(double width, double height) override;
 
 protected:
     MediaValuesCached();
     MediaValuesCached(LocalFrame*);
     MediaValuesCached(const MediaValuesCachedData&);
 
     MediaValuesCachedData m_data;
 };
 
-template <>
-struct CrossThreadCopier<MediaValuesCached::MediaValuesCachedData> {
-    typedef MediaValuesCached::MediaValuesCachedData Type;
-    static Type copy(const MediaValuesCached::MediaValuesCachedData& data) { return data.deepCopy(); }
-};
-
 } // namespace blink
 
+namespace WTF {
+
+template <>
+struct CrossThreadCopier<blink::MediaValuesCached::MediaValuesCachedData> {
+    typedef blink::MediaValuesCached::MediaValuesCachedData Type;
+    static Type copy(const blink::MediaValuesCached::MediaValuesCachedData& data) { return data.deepCopy(); }
+};
+
+} // namespace WTF
+
 #endif // MediaValuesCached_h