Adding Chrome-side WebVR interface

content/renderer/render_frame_impl.h

Index: content/renderer/render_frame_impl.h
diff --git a/content/renderer/render_frame_impl.h b/content/renderer/render_frame_impl.h
index 5c4c0589cdbb807b966b99667677a288888d5739..343fd7cb7fb1602d4875132a081064fb49b07548 100644
--- a/content/renderer/render_frame_impl.h
+++ b/content/renderer/render_frame_impl.h
@@ -112,6 +112,7 @@ struct NavigationParams;
 struct RequestNavigationParams;
 struct ResourceResponseHead;
 struct StartNavigationParams;
+class VRDispatcher;
 
 class CONTENT_EXPORT RenderFrameImpl
     : public RenderFrame,
@@ -531,6 +532,7 @@ class CONTENT_EXPORT RenderFrameImpl
   virtual bool enterFullscreen();
   virtual bool exitFullscreen();
   virtual blink::WebPermissionClient* permissionClient();
+  blink::WebVRClient* webVRClient() override;
 
   // WebMediaPlayerDelegate implementation:
   void DidPlay(blink::WebMediaPlayer* player) override;
@@ -926,6 +928,9 @@ class CONTENT_EXPORT RenderFrameImpl
 
   scoped_ptr<PermissionDispatcher> permission_client_;
 
+  // The VR dispatcher attached to the frame, lazily initialized.
+  VRDispatcher* vr_dispatcher_;
+
 #if defined(OS_MACOSX) || defined(OS_ANDROID)
   // The external popup for the currently showing select popup.
   scoped_ptr<ExternalPopupMenu> external_popup_menu_;