Ensure that Service Worker clients are always returned in MRU order (1)

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 a17e693b69a8212e8154b7ae2c42a8ff92cc8632..8379897e2c040ac27299388b21a8737fedc5c9fd 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -230,6 +230,9 @@ class CONTENT_EXPORT RenderWidgetHostImpl
   // but it failed, thus HasFocus() returns false.
   bool is_focused() const { return is_focused_; }
 
+  // Returns the time is_focused_ was last set to true.
+  base::TimeTicks LastFocusTime() const override;
+
   // Called to notify the RenderWidget that it has lost the mouse lock.
   virtual void LostMouseLock();
 
@@ -815,6 +818,9 @@ class CONTENT_EXPORT RenderWidgetHostImpl
   // causing HasFocus to return false when is_focused_ is true.
   bool is_focused_;
 
+  // Indicates the time when is_focused_ was last set to true.
+  base::TimeTicks last_focus_time_;
+
   base::WeakPtrFactory<RenderWidgetHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);