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

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index 8b0463d343360e8211b1a224e5b2895b27179921..d9701ab946f6c27a013196f6c2c61c422cc10555 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -170,11 +170,11 @@ 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";
@@ -559,4 +559,10 @@ const char kUseSystemSSL[]                  = "use-system-ssl";
 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