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 68b19afed29ace6e202658fbb5c6eb2ea06a19c2..d8eef1bca45b1260c2344d1ca50c989748c85aa3 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
@@ -594,6 +594,16 @@ 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,