Remove RenderFrameMessageFilter.

content/browser/frame_host/render_frame_message_filter.h

Index: content/browser/frame_host/render_frame_message_filter.h
diff --git a/content/browser/frame_host/render_frame_message_filter.h b/content/browser/frame_host/render_frame_message_filter.h
deleted file mode 100644
index e60343acbb7615fd4e89eec3e2d81bcd4fcf2f55..0000000000000000000000000000000000000000
--- a/content/browser/frame_host/render_frame_message_filter.h
+++ /dev/null
@@ -1,45 +0,0 @@
-// Copyright 2013 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 CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_MESSAGE_FILTER_H_
-#define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_MESSAGE_FILTER_H_
-
-#include "content/common/frame_replication_state.h"
-#include "content/public/browser/browser_message_filter.h"
-#include "third_party/WebKit/public/web/WebTreeScopeType.h"
-
-namespace content {
-class RenderWidgetHelper;
-
-// RenderFrameMessageFilter intercepts FrameHost messages on the IO thread
-// that require low-latency processing. The canonical example of this is
-// child-frame creation which is a sync IPC that provides the renderer
-// with the routing id for a newly created RenderFrame.
-//
-// This object is created on the UI thread and used on the IO thread.
-class RenderFrameMessageFilter : public BrowserMessageFilter {
- public:
-  RenderFrameMessageFilter(int render_process_id,
-                           RenderWidgetHelper* render_widget_helper);
-
-  bool OnMessageReceived(const IPC::Message& message) override;
-
- private:
-  ~RenderFrameMessageFilter() override;
-
-  void OnCreateChildFrame(int parent_routing_id,
-                          blink::WebTreeScopeType scope,
-                          const std::string& frame_name,
-                          blink::WebSandboxFlags sandbox_flags,
-                          int* new_render_frame_id);
-
-  const int render_process_id_;
-
-  // Needed for issuing routing ids and surface ids.
-  scoped_refptr<RenderWidgetHelper> render_widget_helper_;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_MESSAGE_FILTER_H_