Add Mojo API for Blink hit testing

content/browser/renderer_host/render_widget_host_view_aura.cc

 // Copyright (c) 2012 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/render_widget_host_view_aura.h"
 
 #include <set>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 880 matching lines @@
   ::ClipCursor(&window_rect);
 }
 
 void RenderWidgetHostViewAura::OnLegacyWindowDestroyed() {
   legacy_render_widget_host_HWND_ = nullptr;
   legacy_window_destroyed_ = true;
 }
 #endif
 
 void RenderWidgetHostViewAura::DidCreateNewRendererCompositorFrameSink(
-    viz::mojom::CompositorFrameSinkClient* renderer_compositor_frame_sink) {
+    viz::mojom::CompositorFrameSinkClient* renderer_compositor_frame_sink,
+    viz::mojom::TargetFrameForInputDelegate* input_delegate) {
   renderer_compositor_frame_sink_ = renderer_compositor_frame_sink;
+  target_frame_for_input_delegate_ = input_delegate;
   if (delegated_frame_host_) {
     delegated_frame_host_->DidCreateNewRendererCompositorFrameSink(
-        renderer_compositor_frame_sink_);
+        renderer_compositor_frame_sink_, input_delegate);
   }
 }
 
 void RenderWidgetHostViewAura::SubmitCompositorFrame(
     const viz::LocalSurfaceId& local_surface_id,
     cc::CompositorFrame frame) {
   TRACE_EVENT0("content", "RenderWidgetHostViewAura::OnSwapCompositorFrame");
 
   // Override the background color to the current compositor background.
   // This allows us to, when navigating to a new page, transfer this color to
@@ skipping 1028 matching lines @@
   if (IsMus())
     return;
 
   // Tests may set |delegated_frame_host_client_|.
   if (!delegated_frame_host_client_) {
     delegated_frame_host_client_ =
         base::MakeUnique<DelegatedFrameHostClientAura>(this);
   }
   delegated_frame_host_ = base::MakeUnique<DelegatedFrameHost>(
       frame_sink_id_, delegated_frame_host_client_.get());
-  if (renderer_compositor_frame_sink_) {
+  if (renderer_compositor_frame_sink_ && target_frame_for_input_delegate_) {
     delegated_frame_host_->DidCreateNewRendererCompositorFrameSink(
-        renderer_compositor_frame_sink_);
+        renderer_compositor_frame_sink_, target_frame_for_input_delegate_);
   }
   UpdateNeedsBeginFramesInternal();
 
   // Let the page-level input event router know about our surface ID
   // namespace for surface-based hit testing.
   if (host_->delegate() && host_->delegate()->GetInputEventRouter()) {
     host_->delegate()->GetInputEventRouter()->AddFrameSinkIdOwner(
         GetFrameSinkId(), this);
   }
 }
@@ skipping 463 matching lines @@
 
 void RenderWidgetHostViewAura::ScrollFocusedEditableNodeIntoRect(
     const gfx::Rect& node_rect) {
   RenderFrameHostImpl* rfh = GetFocusedFrame();
   if (rfh) {
     rfh->GetFrameInputHandler()->ScrollFocusedEditableNodeIntoRect(node_rect);
   }
 }
 
 }  // namespace content