Implement Mac Pop-up Dictionary for OOPIF.

content/browser/renderer_host/render_widget_host_input_event_router.cc

Index: content/browser/renderer_host/render_widget_host_input_event_router.cc
diff --git a/content/browser/renderer_host/render_widget_host_input_event_router.cc b/content/browser/renderer_host/render_widget_host_input_event_router.cc
index 3710a90df7f9d578833047c019537275a9ee9b4b..380eaf22fa5702e86cef6777657c6a22a5d757a7 100644
--- a/content/browser/renderer_host/render_widget_host_input_event_router.cc
+++ b/content/browser/renderer_host/render_widget_host_input_event_router.cc
@@ -426,6 +426,16 @@ void RenderWidgetHostInputEventRouter::OnHittestData(
   hittest_data_[params.surface_id] = data;
 }
 
+RenderWidgetHostImpl*
+RenderWidgetHostInputEventRouter::GetRenderWidgetHostAtPoint(
+    RenderWidgetHostViewBase* root_view,
+    const gfx::Point& point,
+    gfx::Point* transformed_point) {
+  return RenderWidgetHostImpl::From(
+      FindEventTarget(root_view, point, transformed_point)
+          ->GetRenderWidgetHost());
+}
+
 void RenderWidgetHostInputEventRouter::RouteTouchscreenGestureEvent(
     RenderWidgetHostViewBase* root_view,
     blink::WebGestureEvent* event,