Added ability to dynamically toggle frame throttling in the scheduler.

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 9ce8707206cdbb58c1362ae30c04b392200f4f0b..46eb06f88dc187008094eeff0ddccdfb51a9c830 100644
--- a/cc/trees/layer_tree_host.h
+++ b/cc/trees/layer_tree_host.h
@@ -241,6 +241,8 @@ class CC_EXPORT LayerTreeHost {
   void SetVisible(bool visible);
   bool visible() const { return visible_; }
 
+  void SetThrottleFrameProduction(bool throttle);
+
   void StartPageScaleAnimation(const gfx::Vector2d& target_offset,
                                bool use_anchor,
                                float scale,
@@ -483,6 +485,8 @@ class CC_EXPORT LayerTreeHost {
   uint32_t surface_id_namespace_;
   uint32_t next_surface_sequence_;
 
+  int swap_interval_;

[brianderson, 2015/01/05 23:50:46]

Doesn't look like this variable is used?

+
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHost);
 };