Implement sequential focus navigation for OOPIF.

third_party/WebKit/Source/core/frame/RemoteFrame.h

Index: third_party/WebKit/Source/core/frame/RemoteFrame.h
diff --git a/third_party/WebKit/Source/core/frame/RemoteFrame.h b/third_party/WebKit/Source/core/frame/RemoteFrame.h
index c12ec4b6011cd4b0a9087b7900d2de507aadd483..21e0c4e813950662abc7cf9d64d644ff595c6f11 100644
--- a/third_party/WebKit/Source/core/frame/RemoteFrame.h
+++ b/third_party/WebKit/Source/core/frame/RemoteFrame.h
@@ -8,11 +8,13 @@
 #include "core/CoreExport.h"
 #include "core/dom/RemoteSecurityContext.h"
 #include "core/frame/Frame.h"
+#include "public/platform/WebFocusType.h"
 
 namespace blink {
 
 class Event;
 class IntRect;
+class LocalFrame;
 class RemoteDOMWindow;
 class RemoteFrameClient;
 class RemoteFrameView;
@@ -50,6 +52,8 @@ public:
     void setRemotePlatformLayer(WebLayer*);
     WebLayer* remotePlatformLayer() const { return m_remotePlatformLayer; }
 
+    void advanceFocus(WebFocusType, LocalFrame* source);
+
     void setView(PassRefPtrWillBeRawPtr<RemoteFrameView>);
     void createView();