Expose whether a frame is focused to the browser process

content/browser/renderer_host/render_widget_host_impl.h

Index: content/browser/renderer_host/render_widget_host_impl.h
diff --git a/content/browser/renderer_host/render_widget_host_impl.h b/content/browser/renderer_host/render_widget_host_impl.h
index c1c053c9820b589c5e516491914feabeac7b1ce6..654a6c73377a834483c36fb9abc754cebdffa976 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -482,6 +482,8 @@ class CONTENT_EXPORT RenderWidgetHostImpl
 
   void RejectMouseLockOrUnlockIfNecessary();
 
+  bool is_focused() const { return is_focused_; }
+
 #if defined(OS_WIN)
   gfx::NativeViewAccessible GetParentNativeViewAccessible();
 #endif
@@ -828,6 +830,8 @@ class CONTENT_EXPORT RenderWidgetHostImpl
       base::Callback<void(const unsigned char*, size_t)> > PendingSnapshotMap;
   PendingSnapshotMap pending_browser_snapshots_;
 
+  bool is_focused_;
+
   base::WeakPtrFactory<RenderWidgetHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);