cc: Get rid of SurfaceDestroyed and use SurfaceDiscarded instead

cc/surfaces/display_scheduler.cc

Index: cc/surfaces/display_scheduler.cc
diff --git a/cc/surfaces/display_scheduler.cc b/cc/surfaces/display_scheduler.cc
index 8265b87ab74079b38b3743ded92fbafdba711728..525465c0b211c83ad651145454ac8c091a95c6ec 100644
--- a/cc/surfaces/display_scheduler.cc
+++ b/cc/surfaces/display_scheduler.cc
@@ -141,7 +141,7 @@ void DisplayScheduler::SurfaceCreated(const SurfaceInfo& surface_info) {
   surface_states_[surface_id] = SurfaceBeginFrameState();
 }
 
-void DisplayScheduler::SurfaceDestroyed(const SurfaceId& surface_id) {
+void DisplayScheduler::SurfaceDiscarded(const SurfaceId& surface_id) {
   auto it = surface_states_.find(surface_id);
   if (it == surface_states_.end())
     return;