Declaring the weak_ptr_factory in proper order in src/cc.

cc/output/output_surface.h

Index: cc/output/output_surface.h
diff --git a/cc/output/output_surface.h b/cc/output/output_surface.h
index d3eca54fa83d98023e0c71e623785a5fd8422d8c..e041aa08ceb7e8bdd09a4785f9fc59fcf181dce3 100644
--- a/cc/output/output_surface.h
+++ b/cc/output/output_surface.h
@@ -178,12 +178,12 @@ class CC_EXPORT OutputSurface {
 
   bool external_stencil_test_enabled_;
 
-  base::WeakPtrFactory<OutputSurface> weak_ptr_factory_;
-
   std::deque<unsigned> available_gpu_latency_query_ids_;
   std::deque<unsigned> pending_gpu_latency_query_ids_;
   RollingTimeDeltaHistory gpu_latency_history_;
 
+  base::WeakPtrFactory<OutputSurface> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(OutputSurface);
 };