Add Mojo API for Blink hit testing

content/browser/renderer_host/delegated_frame_host.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_RENDERER_HOST_DELEGATED_FRAME_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_DELEGATED_FRAME_HOST_H_
 
 #include <stdint.h>
 
 #include <vector>
@@ skipping 100 matching lines @@
   void OnBeginFrame(const viz::BeginFrameArgs& args) override;
   void ReclaimResources(
       const std::vector<viz::ReturnedResource>& resources) override;
   void WillDrawSurface(const viz::LocalSurfaceId& id,
                        const gfx::Rect& damage_rect) override;
   void OnBeginFramePausedChanged(bool paused) override;
 
   // Public interface exposed to RenderWidgetHostView.
 
   void DidCreateNewRendererCompositorFrameSink(
-      viz::mojom::CompositorFrameSinkClient* renderer_compositor_frame_sink);
+      viz::mojom::CompositorFrameSinkClient* renderer_compositor_frame_sink,
+      viz::mojom::TargetFrameForInputDelegate*);
   void SubmitCompositorFrame(const viz::LocalSurfaceId& local_surface_id,
                              cc::CompositorFrame frame);
   void ClearDelegatedFrame();
   void WasHidden();
   void WasShown(const ui::LatencyInfo& latency_info);
   void WasResized();
   bool HasSavedFrame();
   gfx::Size GetRequestedRendererSize() const;
   void SetCompositor(ui::Compositor* compositor);
   void ResetCompositor();
@@ skipping 106 matching lines @@
       bool result);
   static void ReturnSubscriberTexture(
       base::WeakPtr<DelegatedFrameHost> rwhva,
       scoped_refptr<OwnedMailbox> subscriber_texture,
       const gpu::SyncToken& sync_token);
 
   // Called to consult the current |frame_subscriber_|, to determine and maybe
   // initiate a copy-into-video-frame request.
   void AttemptFrameSubscriberCapture(const gfx::Rect& damage_rect);
 
-  void CreateCompositorFrameSinkSupport();
+  void CreateCompositorFrameSinkSupport(
+      viz::mojom::TargetFrameForInputDelegate* = nullptr);
   void ResetCompositorFrameSinkSupport();
 
   const viz::FrameSinkId frame_sink_id_;
   viz::LocalSurfaceId local_surface_id_;
   DelegatedFrameHostClient* const client_;
   ui::Compositor* compositor_;
 
   // The vsync manager we are observing for changes, if any.
   scoped_refptr<ui::CompositorVSyncManager> vsync_manager_;
 
@@ skipping 57 matching lines @@
   bool has_frame_ = false;
   viz::mojom::CompositorFrameSinkClient* renderer_compositor_frame_sink_ =
       nullptr;
 
   std::unique_ptr<viz::FrameEvictor> frame_evictor_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_DELEGATED_FRAME_HOST_H_