Handle pointer-events: none in browser process hittesting.

content/renderer/render_frame_proxy.cc

 // Copyright 2014 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/renderer/render_frame_proxy.h"
 
 #include <stdint.h>
 #include <map>
 #include <utility>
 
@@ skipping 177 matching lines @@
   CHECK(result.second) << "Inserted a duplicate item.";
 }
 
 bool RenderFrameProxy::IsMainFrameDetachedFromTree() const {
   if (SiteIsolationPolicy::IsSwappedOutStateForbidden())
     return false;
   return web_frame_->top() == web_frame_ &&
       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();
 }
 
 void RenderFrameProxy::SetReplicatedState(const FrameReplicationState& state) {
   DCHECK(web_frame_);
   web_frame_->setReplicatedOrigin(state.origin);
   web_frame_->setReplicatedSandboxFlags(state.sandbox_flags);
   web_frame_->setReplicatedName(blink::WebString::fromUTF8(state.name));
@@ skipping 277 matching lines @@
                                     blink::WebLocalFrame* source) {
   int source_routing_id = RenderFrameImpl::FromWebFrame(source)->GetRoutingID();
   Send(new FrameHostMsg_AdvanceFocus(routing_id_, type, source_routing_id));
 }
 
 void RenderFrameProxy::frameFocused() {
   Send(new FrameHostMsg_FrameFocused(routing_id_));
 }
 
 }  // namespace