Add command line and flag option to force 2D canvas to use display lists

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 1150 matching lines @@
     switches::kEnableTouchEditing,
     switches::kEnableV8IdleNotificationAfterCommit,
     switches::kEnableViewport,
     switches::kEnableViewportMeta,
     switches::kEnableVtune,
     switches::kEnableWebGLDraftExtensions,
     switches::kEnableWebGLImageChromium,
     switches::kEnableWebMIDI,
     switches::kEnableZeroCopy,
     switches::kForceDeviceScaleFactor,
+    switches::kForceDisplayList2dCanvas,
     switches::kFullMemoryCrashReport,
     switches::kIgnoreResolutionLimitsForAcceleratedVideoDecode,
     switches::kIPCConnectionTimeout,
     switches::kJavaScriptFlags,
     switches::kLoggingLevel,
     switches::kMainFrameResizesAreOrientationChanges,
     switches::kMaxUntiledLayerWidth,
     switches::kMaxUntiledLayerHeight,
     switches::kMemoryMetrics,
     switches::kNoReferrers,
@@ skipping 1066 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