test_shell command line switch enable-accelerated-compositing added

webkit/tools/test_shell/test_shell.h

Index: webkit/tools/test_shell/test_shell.h
diff --git a/webkit/tools/test_shell/test_shell.h b/webkit/tools/test_shell/test_shell.h
index d40167ef5d9a2ebc9997f546d9fda21d29054f5c..f055e2752244ef7e4ca3ffbcae3e523506d391c8 100644
--- a/webkit/tools/test_shell/test_shell.h
+++ b/webkit/tools/test_shell/test_shell.h
@@ -279,6 +279,7 @@ public:
     static void SetAllowScriptsToCloseWindows();
 
     static void SetAccelerated2dCanvasEnabled(bool enabled);
+    static void SetAcceleratedCompositingEnabled(bool enabled);
 
     WebPreferences* GetWebPreferences() { return web_prefs_; }
 
@@ -437,6 +438,9 @@ private:
     // True if we're testing the accelerated canvas 2d path.
     static bool accelerated_2d_canvas_enabled_;
 
+    // True if we're testing the accelerated compositing.
+    static bool accelerated_compositing_enabled_;
+
     // True if driven from a nested message loop.
     bool is_modal_;