Revert "Revert 254514 "Revert 254507 "Reland "Move WebKitPlatformSupport...""

content/common/socket_stream_handle_data.h

Index: content/common/socket_stream_handle_data.h
diff --git a/content/common/socket_stream_handle_data.h b/content/common/socket_stream_handle_data.h
index 3ce79ca47b0fef8c8485844eefe0c1fe2b4bdb4f..113f889e66b2a2d7dbeed5bdb25d4de4f221147f 100644
--- a/content/common/socket_stream_handle_data.h
+++ b/content/common/socket_stream_handle_data.h
@@ -6,20 +6,36 @@
 #define CONTENT_RENDERER_SOCKET_STREAM_HANDLE_DATA_H_
 
 #include "base/supports_user_data.h"
-#include "content/common/content_export.h"
+#include "content_export.h"
+
+namespace blink {
+class WebSocketStreamHandle;
+}
 
 namespace content {
 
 // User data stored in each WebSocketStreamHandleImpl.
 class SocketStreamHandleData : public base::SupportsUserData::Data {
  public:
-  explicit SocketStreamHandleData(int render_frame_id)
-      : render_frame_id_(render_frame_id) {}
   virtual ~SocketStreamHandleData() {}
 
   int render_frame_id() const { return render_frame_id_; }
 
+  // Creates SocketStreamHandleData object with |render_frame_id| and store it
+  // to |handle|.
+  static void AddToHandle(
+      blink::WebSocketStreamHandle* handle, int render_frame_id);
+
+  // Retrieves the stored user data from blink::WebSocketStreamHandle object.
+  // |handle| must actually be a WebSocketStreamHandleImpl object.
+  CONTENT_EXPORT static const SocketStreamHandleData* ForHandle(
+      blink::WebSocketStreamHandle* handle);
+
  private:
+  explicit SocketStreamHandleData(int render_frame_id)
+      : render_frame_id_(render_frame_id) {
+  }
+
   int render_frame_id_;
 
   DISALLOW_COPY_AND_ASSIGN(SocketStreamHandleData);