Add a mojo channel for frame messages.

content/public/browser/render_frame_host.h

 // 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_PUBLIC_BROWSER_RENDER_FRAME_HOST_H_
 #define CONTENT_PUBLIC_BROWSER_RENDER_FRAME_HOST_H_
 
 #include <string>
 
 #include "base/callback_forward.h"
 #include "build/build_config.h"
 #include "content/common/content_export.h"
+#include "content/common/input/input_handler.mojom.h"
 #include "content/public/common/console_message_level.h"
 #include "content/public/common/file_chooser_params.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
 #include "third_party/WebKit/public/platform/WebPageVisibilityState.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/native_widget_types.h"
 #include "url/gurl.h"
 #include "url/origin.h"
 
@@ skipping 233 matching lines @@
 #endif  // OS_ANDROID
 
   // Stops and disables the hang monitor for beforeunload. This avoids flakiness
   // in tests that need to observe beforeunload dialogs, which could fail if the
   // timeout skips the dialog.
   virtual void DisableBeforeUnloadHangMonitorForTesting() = 0;
   virtual bool IsBeforeUnloadHangMonitorDisabledForTesting() = 0;
 
   virtual bool IsFeatureEnabled(blink::WebFeaturePolicyFeature feature) = 0;
 
+  virtual mojom::FrameInputHandler* GetFrameInputHandler() = 0;
+
  private:
   // This interface should only be implemented inside content.
   friend class RenderFrameHostImpl;
   RenderFrameHost() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_RENDER_FRAME_HOST_H_