Add Mojo API for Blink hit testing

content/browser/frame_host/render_widget_host_view_guest.h

 // Copyright 2014 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_WIDGET_HOST_VIEW_GUEST_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_GUEST_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 90 matching lines @@
                               InputEventAckState ack_result) override;
 #endif
   void ProcessMouseEvent(const blink::WebMouseEvent& event,
                          const ui::LatencyInfo& latency) override;
   void ProcessTouchEvent(const blink::WebTouchEvent& event,
                          const ui::LatencyInfo& latency) override;
 
   bool LockMouse() override;
   void UnlockMouse() override;
   void DidCreateNewRendererCompositorFrameSink(
-      viz::mojom::CompositorFrameSinkClient* renderer_compositor_frame_sink)
-      override;
+      viz::mojom::CompositorFrameSinkClient* renderer_compositor_frame_sink,
+      viz::mojom::TargetFrameForInputDelegate*) override;
 
 #if defined(OS_MACOSX)
   // RenderWidgetHostView implementation.
   void SetActive(bool active) override;
   void ShowDefinitionForSelection() override;
   bool SupportsSpeech() const override;
   void SpeakSelection() override;
   bool IsSpeaking() const override;
   void StopSpeaking() override;
 #endif  // defined(OS_MACOSX)
@@ skipping 51 matching lines @@
   // The guest may forward its updates only when there is an ongoing IME
   // session.
   bool should_forward_text_selection_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewGuest);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_GUEST_H_