Not for review.

cc/trees/thread_proxy.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/trees/thread_proxy.h"
 
 #include <string>
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
@@ skipping 1150 matching lines @@
     DCHECK(swap_requested);
     result.did_swap = layer_tree_host_impl_->SwapBuffers(frame);
 
     // We don't know if we have incomplete tiles if we didn't actually swap.
     if (result.did_swap) {
       DCHECK(!frame.has_no_damage);
       SetSwapUsedIncompleteTileOnImplThread(frame.contains_incomplete_tile);
     }
   }
 
+  frame.render_passes.clear();
+
   // Tell the main thread that the the newly-commited frame was drawn.
   if (next_frame_is_newly_committed_frame_on_impl_thread_) {
     next_frame_is_newly_committed_frame_on_impl_thread_ = false;
     Proxy::MainThreadTaskRunner()->PostTask(
         FROM_HERE,
         base::Bind(&ThreadProxy::DidCommitAndDrawFrame, main_thread_weak_ptr_));
   }
 
   if (draw_frame) {
     CheckOutputSurfaceStatusOnImplThread();
@@ skipping 461 matching lines @@
   commit_to_activate_duration_history_.InsertSample(
       base::TimeTicks::HighResNow() - commit_complete_time_);
 }
 
 void ThreadProxy::DidManageTiles() {
   DCHECK(IsImplThread());
   scheduler_on_impl_thread_->DidManageTiles();
 }
 
 }  // namespace cc