Implement WebViewClient::createGraphicsContext3D (and support for DRT)

webkit/support/webkit_support.h

Index: webkit/support/webkit_support.h
diff --git a/webkit/support/webkit_support.h b/webkit/support/webkit_support.h
index 71de1e020052ccb0142f2f6f327552f115081d2f..c8ed97c75482c1e349b1775a246b0ec03e47aa86 100644
--- a/webkit/support/webkit_support.h
+++ b/webkit/support/webkit_support.h
@@ -11,6 +11,7 @@
 #include "base/string16.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDevToolsAgentClient.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebFileSystem.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebGraphicsContext3D.h"
 #include "ui/base/keycodes/keyboard_codes.h"
 
 namespace WebKit {
@@ -98,6 +99,11 @@ enum GraphicsContext3DImplementation {
 void SetGraphicsContext3DImplementation(GraphicsContext3DImplementation);
 GraphicsContext3DImplementation GetGraphicsContext3DImplementation();
 
+WebKit::WebGraphicsContext3D* CreateGraphicsContext3D(
+    WebKit::WebGraphicsContext3D::Attributes attributes,
+    WebKit::WebView* web_view,
+    bool direct);
+
 // ------- URL load mocking.
 // Registers the file at |file_path| to be served when |url| is requested.
 // |response| is the response provided with the contents.