Move CrossThreadCopier from platform/ to wtf/

third_party/WebKit/Source/core/dom/DocumentEncodingData.h

Index: third_party/WebKit/Source/core/dom/DocumentEncodingData.h
diff --git a/third_party/WebKit/Source/core/dom/DocumentEncodingData.h b/third_party/WebKit/Source/core/dom/DocumentEncodingData.h
index cc47050d68846957a8491aa9d4a83d8e80bad2fa..5cae9033aa0ce9a37b638c4bd6cbdf19d006c490 100644
--- a/third_party/WebKit/Source/core/dom/DocumentEncodingData.h
+++ b/third_party/WebKit/Source/core/dom/DocumentEncodingData.h
@@ -31,8 +31,8 @@
 #ifndef DocumentEncodingData_h
 #define DocumentEncodingData_h
 
-#include "platform/CrossThreadCopier.h"
 #include "wtf/Allocator.h"
+#include "wtf/CrossThreadCopier.h"
 #include "wtf/text/TextEncoding.h"
 
 namespace blink {
@@ -55,10 +55,6 @@ private:
     bool m_sawDecodingError;
 };
 
-template <>
-struct CrossThreadCopier<DocumentEncodingData> : public CrossThreadCopierPassThrough<DocumentEncodingData> {
-};
-
 inline bool operator!=(const DocumentEncodingData& a, const DocumentEncodingData& b)
 {
     return a.encoding() != b.encoding()
@@ -68,4 +64,12 @@ inline bool operator!=(const DocumentEncodingData& a, const DocumentEncodingData
 
 } // namespace blink
 
+namespace WTF {
+
+template <>
+struct CrossThreadCopier<blink::DocumentEncodingData> : public CrossThreadCopierPassThrough<blink::DocumentEncodingData> {
+};
+
+} // namespace WTF
+
 #endif // DocumentEncodingData_h