cc: Fix hit-testing in zero-opacity layers.

cc/trees/layer_tree_host_impl.cc

 // Copyright 2011 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 "cc/trees/layer_tree_host_impl.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/basictypes.h"
@@ skipping 737 matching lines @@
                it->render_surface()->contributes_to_drawn_surface()) {
       RenderPass::Id contributing_render_pass_id =
           it->render_surface()->RenderPassId();
       RenderPass* contributing_render_pass =
           frame->render_passes_by_id[contributing_render_pass_id];
       AppendQuadsForRenderSurfaceLayer(target_render_pass,
                                        *it,
                                        contributing_render_pass,
                                        occlusion_tracker,
                                        &append_quads_data);
-    } else if (it.represents_itself() && it->DrawsContent() &&
+    } else if (it.represents_itself() &&
+               !it->draw_properties().skip_drawing &&
                !it->visible_content_rect().IsEmpty()) {
       bool impl_draw_transform_is_unknown = false;
       bool occluded = occlusion_tracker.Occluded(
               it->render_target(),
               it->visible_content_rect(),
               it->draw_transform(),
               impl_draw_transform_is_unknown);
       if (!occluded && it->WillDraw(draw_mode, resource_provider_.get())) {
         DCHECK_EQ(active_tree_, it->layer_tree_impl());
 
@@ skipping 2033 matching lines @@
   std::set<UIResourceId>::iterator found_in_evicted =
       evicted_ui_resources_.find(uid);
   if (found_in_evicted == evicted_ui_resources_.end())
     return;
   evicted_ui_resources_.erase(found_in_evicted);
   if (evicted_ui_resources_.empty())
     client_->OnCanDrawStateChanged(CanDraw());
 }
 
 }  // namespace cc