Revert of Always create top controls manager

content/browser/renderer_host/render_process_host_impl.cc

 // Copyright (c) 2012 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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 1290 matching lines @@
     switches::kVideoThreads,
     switches::kVModule,
     // Please keep these in alphabetical order. Compositor switches here should
     // also be added to chrome/browser/chromeos/login/chrome_restart_request.cc.
     cc::switches::kCompositeToMailbox,
     cc::switches::kDisableCompositedAntialiasing,
     cc::switches::kDisableMainFrameBeforeActivation,
     cc::switches::kDisableThreadedAnimation,
     cc::switches::kEnableGpuBenchmarking,
     cc::switches::kEnableMainFrameBeforeActivation,
+    cc::switches::kEnableTopControlsPositionCalculation,
     cc::switches::kMaxTilesForInterestArea,
     cc::switches::kMaxUnusedResourceMemoryUsagePercentage,
     cc::switches::kShowCompositedLayerBorders,
     cc::switches::kShowFPSCounter,
     cc::switches::kShowLayerAnimationBounds,
     cc::switches::kShowPropertyChangedRects,
     cc::switches::kShowReplicaScreenSpaceRects,
     cc::switches::kShowScreenSpaceRects,
     cc::switches::kShowSurfaceDamageRects,
     cc::switches::kSlowDownRasterScaleFactor,
@@ skipping 1075 matching lines @@
   if (worker_ref_count_ == 0)
     Cleanup();
 }
 
 void RenderProcessHostImpl::GetAudioOutputControllers(
     const GetAudioOutputControllersCallback& callback) const {
   audio_renderer_host()->GetOutputControllers(callback);
 }
 
 }  // namespace content