Handle pointer-events: none in browser process hittesting.

content/renderer/render_frame_proxy.cc

Index: content/renderer/render_frame_proxy.cc
diff --git a/content/renderer/render_frame_proxy.cc b/content/renderer/render_frame_proxy.cc
index d8effb5229f90e516b256e40ed534c172cb3438b..9cb8351f57408241e47c96953fa3919a1277cfea 100644
--- a/content/renderer/render_frame_proxy.cc
+++ b/content/renderer/render_frame_proxy.cc
@@ -195,6 +195,18 @@ bool RenderFrameProxy::IsMainFrameDetachedFromTree() const {
       render_view_->webview()->mainFrame()->isWebLocalFrame();
 }
 
+void RenderFrameProxy::WillBeginCompositorFrame() {
+  if (ChildFrameCompositingHelper* compositing_helper =

[dcheng, 2016/01/21 23:47:20]

Just saying:
  if (compositing_helper_)

will be shorter.

+          compositing_helper_.get()) {
+    FrameHostMsg_HittestData_Params params;
+    params.surface_id = compositing_helper->surface_id();
+    params.ignored_for_hittest = web_frame_->ignoredForHittest();
+    render_widget_->QueueMessage(
+        new FrameHostMsg_HittestData(render_widget_->routing_id(), params),
+        MESSAGE_DELIVERY_POLICY_WITH_VISUAL_STATE);
+  }
+}
+
 void RenderFrameProxy::DidCommitCompositorFrame() {
   if (compositing_helper_.get())
     compositing_helper_->DidCommitCompositorFrame();