Add Mojo API for Blink hit testing

content/browser/renderer_host/frame_sink_provider_impl.cc

 // Copyright 2017 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.
 #include "content/browser/renderer_host/frame_sink_provider_impl.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 
 namespace content {
 
 FrameSinkProviderImpl::FrameSinkProviderImpl(int32_t process_id)
     : process_id_(process_id), binding_(this) {}
 
 FrameSinkProviderImpl::~FrameSinkProviderImpl() = default;
 
 void FrameSinkProviderImpl::Bind(mojom::FrameSinkProviderRequest request) {
   if (binding_.is_bound()) {
     DLOG(ERROR) << "Received multiple requests for FrameSinkProvider. "
                 << "There should be only one instance per renderer.";
     return;
   }
   binding_.Bind(std::move(request));
 }
 
 void FrameSinkProviderImpl::Unbind() {
   binding_.Close();
 }
 
 void FrameSinkProviderImpl::CreateForWidget(
     int32_t widget_id,
     viz::mojom::CompositorFrameSinkRequest request,
-    viz::mojom::CompositorFrameSinkClientPtr client) {
+    viz::mojom::CompositorFrameSinkClientPtr client,
+    viz::mojom::TargetFrameForInputDelegatePtr input_delegate) {
   RenderWidgetHostImpl* render_widget_host_impl =
       RenderWidgetHostImpl::FromID(process_id_, widget_id);
   if (!render_widget_host_impl) {
     DLOG(ERROR) << "No RenderWidgetHost exists with id " << widget_id
                 << "in process " << process_id_;
     return;
   }
-  render_widget_host_impl->RequestCompositorFrameSink(std::move(request),
-                                                      std::move(client));
+  render_widget_host_impl->RequestCompositorFrameSink(
+      std::move(request), std::move(client), std::move(input_delegate));
 }
 
 }  // namespace content