Add a switch to enable composited scrolling for frames and enable it on Android.

content/public/common/content_switches.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.
 
 // Defines all the "content" command-line switches.
 
 #ifndef CONTENT_PUBLIC_COMMON_CONTENT_SWITCHES_H_
 #define CONTENT_PUBLIC_COMMON_CONTENT_SWITCHES_H_
 
 #include "build/build_config.h"
@@ skipping 164 matching lines @@
 CONTENT_EXPORT extern const char kRendererProcess[];
 extern const char kRendererProcessLimit[];
 extern const char kRendererStartupDialog[];
 // TODO(jam): this doesn't belong in content.
 CONTENT_EXPORT extern const char kServiceProcess[];
 extern const char kShowCompositedLayerBorders[];
 extern const char kShowCompositedLayerTree[];
 extern const char kShowFPSCounter[];
 extern const char kEnableAcceleratedOverflowScroll[];
 extern const char kEnableAcceleratedScrollableFrames[];
+extern const char kEnableCompositedScrollingForFrames[];
 extern const char kShowPaintRects[];
 CONTENT_EXPORT extern const char kSimulateTouchScreenWithMouse[];
 CONTENT_EXPORT extern const char kSingleProcess[];
 CONTENT_EXPORT extern const char kSitePerProcess[];
 CONTENT_EXPORT extern const char kSkipGpuDataLoading[];
 extern const char kTapDownDeferralTimeMs[];
 CONTENT_EXPORT extern const char kTestSandbox[];
 CONTENT_EXPORT extern const char kTestingFixedHttpPort[];
 CONTENT_EXPORT extern const char kTestingFixedHttpsPort[];
 extern const char kTraceStartup[];
@@ skipping 45 matching lines @@
 CONTENT_EXPORT extern const char kFlingTapSuppressMaxDown[];
 CONTENT_EXPORT extern const char kFlingTapSuppressMaxGap[];
 CONTENT_EXPORT extern const char kTestCompositor[];
 #endif
 
 CONTENT_EXPORT extern const char kEnableOverscrollHistoryNavigation[];
 
 }  // namespace switches
 
 #endif  // CONTENT_PUBLIC_COMMON_CONTENT_SWITCHES_H_