[Android WebView] Turn on accelerated canvas based on View.isHardwareAccelerated

android_webview/common/aw_switches.cc

 // Copyright 2013 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.
 
 #include "android_webview/common/aw_switches.h"
 
 namespace switches {
 
 const char kDisableSimpleCache[] = "disable-simple-cache";
 
 const char kDisableWebViewGLMode[] = "disable-webview-gl-mode";
 
 const char kTileMemoryMultiplier[] = "tile-memory-multiplier";
 
 const char kNumGrallocBuffersPerWebview[] = "num-gralloc-buffers-per-webview";
 
+const char kEnableAccelerated2dCanvas[] = "enable-accelerated-2d-canvas";
+
 }  // namespace switches