Add threaded compositing mode to field trial

chrome/browser/gpu_util.h

 // 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.
 
 #ifndef CHROME_BROWSER_GPU_UTIL_H_
 #define CHROME_BROWSER_GPU_UTIL_H_
 
 #include <string>
 
 #include "content/public/common/gpu_feature_type.h"
@@ skipping 50 matching lines @@
 //
 // Caller is responsible for deleting the returned value.
 base::Value* GetFeatureStatus();
 
 // Returns the GpuInfo as a DictionaryValue.
 base::DictionaryValue* GpuInfoAsDictionaryValue();
 
 // Send UMA histograms about the enabled features.
 void UpdateStats();
 
-// Returs whether this client has been selected for the force-compositing-mode
-// trial.
-bool InForceCompositingModeTrial();
+// Returns whether this client has been selected for the force-compositing-mode
+// or threaded-compositor trial.
+bool InForceCompositingModeOrThreadTrial();
 
 // Sets up the force-compositing-mode field trial.
 void InitializeForceCompositingModeFieldTrial();
 
 }  // namespace gpu_util
 
 #endif  // CHROME_BROWSER_GPU_UTIL_H_