Revert of cc: Use worker context for one-copy tile initialization.

cc/tiles/tile_manager.cc

Index: cc/tiles/tile_manager.cc
diff --git a/cc/tiles/tile_manager.cc b/cc/tiles/tile_manager.cc
index 6d192a14e7d381ec9de39b06eaa9453810641026..3ff2885006d3f1cdb04e8ddc4f5128d40e0c060e 100644
--- a/cc/tiles/tile_manager.cc
+++ b/cc/tiles/tile_manager.cc
@@ -494,7 +494,7 @@
   // or deleted. If this operation becomes expensive too, only do this after
   // some resource(s) was returned. Note that in that case, one also need to
   // invalidate when releasing some resource from the pool.
-  resource_pool_->CheckBusyResources();
+  resource_pool_->CheckBusyResources(false);
 
   // Now give memory out to the tiles until we're out, and build
   // the needs-to-be-rasterized queue.