cc: Layer::SetTouchEventHandlerRegion should SetNeedsCommit

cc/layers/layer.cc

 // Copyright 2010 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/layers/layer.h"
 
 #include <algorithm>
 
 #include "base/debug/trace_event.h"
 #include "base/location.h"
@@ skipping 612 matching lines @@
     return;
   non_fast_scrollable_region_ = region;
   SetNeedsCommit();
 }
 
 void Layer::SetTouchEventHandlerRegion(const Region& region) {
   DCHECK(IsPropertyChangeAllowed());
   if (touch_event_handler_region_ == region)
     return;
   touch_event_handler_region_ = region;
+  SetNeedsCommit();
 }
 
 void Layer::SetDrawCheckerboardForMissingTiles(bool checkerboard) {
   DCHECK(IsPropertyChangeAllowed());
   if (draw_checkerboard_for_missing_tiles_ == checkerboard)
     return;
   draw_checkerboard_for_missing_tiles_ = checkerboard;
   SetNeedsCommit();
 }
 
@@ skipping 340 matching lines @@
 
 RenderingStatsInstrumentation* Layer::rendering_stats_instrumentation() const {
   return layer_tree_host_->rendering_stats_instrumentation();
 }
 
 bool Layer::SupportsLCDText() const {
   return false;
 }
 
 }  // namespace cc