Revert 220418 "cc: Block commit on activate by setting a flag on..."

trunk/src/cc/layers/tiled_layer.cc

Index: trunk/src/cc/layers/tiled_layer.cc
===================================================================
--- trunk/src/cc/layers/tiled_layer.cc	(revision 220454)
+++ trunk/src/cc/layers/tiled_layer.cc	(working copy)
@@ -235,6 +235,8 @@
   needs_push_properties_ = true;
 }
 
+bool TiledLayer::BlocksPendingCommit() const { return true; }
+
 PrioritizedResourceManager* TiledLayer::ResourceManager() {
   if (!layer_tree_host())
     return NULL;
@@ -729,10 +731,6 @@
                         const OcclusionTracker* occlusion) {
   DCHECK(!skips_draw_ && !failed_update_);  // Did ResetUpdateState get skipped?
 
-  // Tiled layer always causes commits to wait for activation, as it does
-  // not support pending trees.
-  SetNextCommitWaitsForActivation();
-
   bool updated = false;
 
   {