Add support for DumpRenderTree to use the GPU rather than software renderer

webkit/support/webkit_support.cc

Index: webkit/support/webkit_support.cc
diff --git a/webkit/support/webkit_support.cc b/webkit/support/webkit_support.cc
index e9eed2e6318364388e8c29e3abc0f2425cda96a5..3b02a55d8ca812d71aa350431edf6da81df713b2 100644
--- a/webkit/support/webkit_support.cc
+++ b/webkit/support/webkit_support.cc
@@ -4,6 +4,7 @@
 
 #include "webkit/support/webkit_support.h"
 
+#include "app/gfx/gl/gl_context.h"
 #include "app/gfx/gl/gl_implementation.h"
 #include "base/at_exit.h"
 #include "base/base64.h"
@@ -289,6 +290,19 @@ WebKit::WebString GetWebKitRootDir() {
   return WebKit::WebString::fromUTF8(WideToUTF8(path.ToWStringHack()).c_str());
 }
 
+void SetUpGLBindings(GLBindingPreferences bindingPref) {
+  switch(bindingPref) {
+    case GL_BINDING_DEFAULT:
+      gfx::GLContext::InitializeOneOff();
+      break;
+    case GL_BINDING_SOFTWARE_RENDERER:
+      gfx::InitializeGLBindings(gfx::kGLImplementationOSMesaGL);
+      break;
+    default:
+      NOTREACHED();
+  }
+}
+
 void RegisterMockedURL(const WebKit::WebURL& url,
                      const WebKit::WebURLResponse& response,
                      const WebKit::WebString& file_path) {