Add a command-line switch --enable-per-tile-painting.

content/public/common/content_switches.cc

 // Copyright (c) 2011 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 "content/public/common/content_switches.h"
 
 namespace switches {
 
 // By default, file:// URIs cannot read other file:// URIs. This is an
 // override for developers who need the old behavior for testing.
@@ skipping 152 matching lines @@
 
 // Disable web audio API.
 const char kDisableWebAudio[]               = "disable-webaudio";
 
 // Disable Web Sockets support.
 const char kDisableWebSockets[]             = "disable-web-sockets";
 
 // Enable gpu-accelerated 2d canvas.
 const char kEnableAccelerated2dCanvas[]     = "enable-accelerated-2d-canvas";
 
-// Enable hardware accelerated page drawing.
+// Enable hardware accelerated page painting.
 // Please note that this flag is honored only if chromium is compiled with

[alokp, 2011/12/13 17:20:16]

Would you mind removing this comment? It is not true anymore.

 // SKIA_GPU flag, which can be enabled by setting use_skia_gpu variable to 1
 // in build/features_override.gypi.
-const char kEnableAcceleratedDrawing[]      = "enable-accelerated-drawing";
+const char kEnableAcceleratedPainting[]     = "enable-accelerated-painting";
 
 // Enable gpu-accelerated SVG/W3C filters.
 const char kEnableAcceleratedFilters[]      = "enable-accelerated-filters";
 
 // Enables WebKit accessibility within the renderer process.
 const char kEnableAccessibility[]           = "enable-accessibility";
 
 // Turns on extremely verbose logging of accessibility events.
 const char kEnableAccessibilityLogging[]    = "enable-accessibility-logging";
 
@@ skipping 364 matching lines @@
 // Use the system SSL library (Secure Transport on Mac, SChannel on Windows)
 // instead of NSS for SSL.
 const char kUseSystemSSL[]                  = "use-system-ssl";
 #endif
 
 #if !defined(OFFICIAL_BUILD)
 // Causes the renderer process to throw an assertion on launch.
 const char kRendererCheckFalseTest[]        = "renderer-check-false-test";
 #endif
 
+// Enable per-tile page painting.
+// Please note that this flag is honored only if chromium is compiled with
+// SKIA_GPU flag, which can be enabled by setting use_skia_gpu variable to 1
+// in build/features_override.gypi.
+const char kEnablePerTilePainting[]         = "enable-per-tile-painting";
+
 }  // namespace switches