Implement WebKitPlatformSupport::canAccelerate2dCanvas

webkit/support/test_webkit_platform_support.cc

Index: webkit/support/test_webkit_platform_support.cc
diff --git a/webkit/support/test_webkit_platform_support.cc b/webkit/support/test_webkit_platform_support.cc
index d166c378e60d01fa2af7d95ba2ca8fe4101ddb0e..767cad190072174a3d08ab63ca8340081a225627 100644
--- a/webkit/support/test_webkit_platform_support.cc
+++ b/webkit/support/test_webkit_platform_support.cc
@@ -401,6 +401,12 @@ TestWebKitPlatformSupport::createOffscreenGraphicsContext3D(
   return NULL;
 }
 
+bool TestWebKitPlatformSupport::canAccelerate2dCanvas() {
+  // We supply an OS-MESA based context for accelarated 2d
+  // canvas, which should always work.
+  return true;
+}
+
 double TestWebKitPlatformSupport::audioHardwareSampleRate() {
   return 44100.0;
 }