Add --root-layer-scrolls.

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 1157 matching lines @@
     switches::kMaxUntiledLayerHeight,
     switches::kMemoryMetrics,
     switches::kNoReferrers,
     switches::kNoSandbox,
     switches::kPpapiInProcess,
     switches::kProfilerTiming,
     switches::kReduceSecurityForTesting,
     switches::kRegisterPepperPlugins,
     switches::kRendererAssertTest,
     switches::kRendererStartupDialog,
+    switches::kRootLayerScrolls,
     switches::kShowPaintRects,
     switches::kSitePerProcess,
     switches::kStatsCollectionController,
     switches::kTestType,
     switches::kTouchEvents,
     switches::kTraceToConsole,
     switches::kUseDiscardableMemory,
     // This flag needs to be propagated to the renderer process for
     // --in-process-webgl.
     switches::kUseGL,
@@ skipping 1048 matching lines @@
 
 void RenderProcessHostImpl::DecrementWorkerRefCount() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   DCHECK_GT(worker_ref_count_, 0);
   --worker_ref_count_;
   if (worker_ref_count_ == 0)
     Cleanup();
 }
 
 }  // namespace content