Move CrossThreadCopier from platform/ to wtf/

third_party/WebKit/Source/platform/network/ResourceRequest.h

Index: third_party/WebKit/Source/platform/network/ResourceRequest.h
diff --git a/third_party/WebKit/Source/platform/network/ResourceRequest.h b/third_party/WebKit/Source/platform/network/ResourceRequest.h
index ffcac5b881ecf7c51f8a66f075a0abdc5569772f..3c394afecd4b96989fbeac5f01cace8d803845fe 100644
--- a/third_party/WebKit/Source/platform/network/ResourceRequest.h
+++ b/third_party/WebKit/Source/platform/network/ResourceRequest.h
@@ -38,6 +38,7 @@
 #include "platform/weborigin/SecurityOrigin.h"
 #include "public/platform/WebAddressSpace.h"
 #include "public/platform/WebURLRequest.h"
+#include "wtf/CrossThreadCopier.h"
 #include "wtf/RefCounted.h"
 #include <memory>
 
@@ -339,4 +340,18 @@ public:
 
 } // namespace blink
 
+namespace WTF {
+
+template <>
+struct CrossThreadCopier<blink::ResourceRequest> {
+    STATIC_ONLY(CrossThreadCopier);
+    typedef PassedWrapper<std::unique_ptr<blink::CrossThreadResourceRequestData>> Type;
+    PLATFORM_EXPORT static Type copy(const blink::ResourceRequest& request)
+    {
+        return passed(request.copyData());
+    }
+};
+
+} // namespace WTF
+
 #endif // ResourceRequest_h