Fix --single-process mode issues with GpuChannelHostFactory

content/common/webkitplatformsupport_impl.h

Index: content/common/webkitplatformsupport_impl.h
diff --git a/content/common/webkitplatformsupport_impl.h b/content/common/webkitplatformsupport_impl.h
index 6cadfdea8a5a5645cccbdb3d43848a15664100c2..d92d4b420e5baa85d811937e1423ccc9a2c284e5 100644
--- a/content/common/webkitplatformsupport_impl.h
+++ b/content/common/webkitplatformsupport_impl.h
@@ -10,6 +10,8 @@
 #include "content/common/content_export.h"
 #include "webkit/glue/webkitplatformsupport_impl.h"
 
+class GpuChannelHostFactory;
+
 namespace content {
 
 // This is a specialization of WebKitPlatformSupportImpl that implements the
@@ -32,6 +34,9 @@ class CONTENT_EXPORT WebKitPlatformSupportImpl
       webkit_glue::WebSocketStreamHandleDelegate* delegate) OVERRIDE;
   virtual WebKit::WebGraphicsContext3D* createOffscreenGraphicsContext3D(
       const WebKit::WebGraphicsContext3D::Attributes& attributes);
+
+ protected:
+  virtual GpuChannelHostFactory* GetGpuChannelHostFactory();
 };
 
 }  // namespace content