LayerTreeHost should not modify the LayerTreeSettings object. Instead it should use a temporary va…

cc/trees/layer_tree_host.h

Index: cc/trees/layer_tree_host.h
diff --git a/cc/trees/layer_tree_host.h b/cc/trees/layer_tree_host.h
index 72a5628a9adfbca1675c88bfa8680c64bbbfab7c..d9bf38989d7c223e994b75e5d22c5b70097ba160 100644
--- a/cc/trees/layer_tree_host.h
+++ b/cc/trees/layer_tree_host.h
@@ -272,8 +272,11 @@ class CC_EXPORT LayerTreeHost : NON_EXPORTED_BASE(public RateLimiterClient) {
   // RateLimiterClient implementation.
   virtual void RateLimit() OVERRIDE;
 
+  size_t MaxPartialTextureUpdates() const {

[danakj, 2013/10/03 17:42:26]

rename to max_partial_texture_updates()

+    return max_partial_texture_updates_;
+  }
   bool buffered_updates() const {
-    return settings_.max_partial_texture_updates !=
+    return max_partial_texture_updates_ !=
         std::numeric_limits<size_t>::max();
   }
   bool RequestPartialTextureUpdate();
@@ -389,7 +392,7 @@ class CC_EXPORT LayerTreeHost : NON_EXPORTED_BASE(public RateLimiterClient) {
   base::WeakPtr<InputHandler> input_handler_weak_ptr_;
   base::WeakPtr<TopControlsManager> top_controls_manager_weak_ptr_;
 
-  LayerTreeSettings settings_;
+  const LayerTreeSettings settings_;
   LayerTreeDebugState debug_state_;
 
   gfx::Size device_viewport_size_;
@@ -417,6 +420,7 @@ class CC_EXPORT LayerTreeHost : NON_EXPORTED_BASE(public RateLimiterClient) {
 
   typedef ScopedPtrVector<PrioritizedResource> TextureList;
   size_t partial_texture_update_requests_;
+  size_t max_partial_texture_updates_;
 
   scoped_ptr<AnimationRegistrar> animation_registrar_;