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

cc/resources/resource_pool.h

Index: cc/resources/resource_pool.h
diff --git a/cc/resources/resource_pool.h b/cc/resources/resource_pool.h
index e87e217ea144b4b59024eacaf6abd26b5f139efe..e577826059a1f3a2a32cf5932436b3d579a1d9e1 100644
--- a/cc/resources/resource_pool.h
+++ b/cc/resources/resource_pool.h
@@ -41,7 +41,10 @@
                               size_t max_resource_count);
 
   void ReduceResourceUsage();
-  void CheckBusyResources();
+  // This might block if |wait_if_needed| is true and one of the currently
+  // busy resources has a read lock fence that needs to be waited upon before
+  // it can be locked for write again.
+  void CheckBusyResources(bool wait_if_needed);
 
   size_t total_memory_usage_bytes() const { return memory_usage_bytes_; }
   size_t acquired_memory_usage_bytes() const {