Browser Plugin: Make aware of focus direction.

content/renderer/browser_plugin/browser_plugin.h

Index: content/renderer/browser_plugin/browser_plugin.h
diff --git a/content/renderer/browser_plugin/browser_plugin.h b/content/renderer/browser_plugin/browser_plugin.h
index ed7b63b615a51b67637c262cd8bea595675b0c33..df8a1b94f7ea3bba74e7d5596628a0b06afa0aff 100644
--- a/content/renderer/browser_plugin/browser_plugin.h
+++ b/content/renderer/browser_plugin/browser_plugin.h
@@ -47,7 +47,7 @@ class CONTENT_EXPORT BrowserPlugin :
   bool guest_crashed() const { return guest_crashed_; }
 
   // Informs the guest of an updated focus state.
-  void UpdateGuestFocusState();
+  void UpdateGuestFocusState(blink::WebFocusType focus_type);
 
   // Indicates whether the guest should be focused.
   bool ShouldGuestBeFocused() const;
@@ -92,7 +92,8 @@ class CONTENT_EXPORT BrowserPlugin :
       const blink::WebRect& clip_rect,
       const blink::WebVector<blink::WebRect>& cut_outs_rects,
       bool is_visible) override;
-  virtual void updateFocus(bool focused) override;
+  virtual void updateFocus(bool focused,
+                           blink::WebFocusType focus_type) override;
   virtual void updateVisibility(bool visible) override;
   virtual bool acceptsInputEvents() override;
   virtual bool handleInputEvent(