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

content/browser/frame_host/frame_tree_node.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_FRAME_HOST_FRAME_TREE_NODE_H_
 #define CONTENT_BROWSER_FRAME_HOST_FRAME_TREE_NODE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 185 matching lines @@
   // The load progress for a RenderFrameHost in this node was updated to
   // |load_progress|. This will notify the FrameTree which will in turn notify
   // the WebContents.
   void DidChangeLoadProgress(double load_progress);
 
   // Called when the user directed the page to stop loading. Stops all loads
   // happening in the FrameTreeNode. This method should be used with
   // FrameTree::ForEach to stop all loads in the entire FrameTree.
   bool StopLoading();
 
+  // Returns the time this frame was last focused.
+  base::TimeTicks last_focus_time() const { return last_focus_time_; }
+  void set_last_focus_time(const base::TimeTicks& last_focus_time) {
+    last_focus_time_ = last_focus_time;
+  }
+
  private:
   class OpenerDestroyedObserver;
 
   void set_parent(FrameTreeNode* parent) { parent_ = parent; }
 
   // The next available browser-global FrameTreeNode ID.
   static int next_frame_tree_node_id_;
 
   // The FrameTree that owns us.
   FrameTree* frame_tree_;  // not owned.
@@ skipping 58 matching lines @@
   double loading_progress_;
 
   // PlzNavigate
   // Owns an ongoing NavigationRequest until it is ready to commit. It will then
   // be reset and a RenderFrameHost will be responsible for the navigation.
   scoped_ptr<NavigationRequest> navigation_request_;
 
   // List of objects observing this FrameTreeNode.
   base::ObserverList<Observer> observers_;
 
+  base::TimeTicks last_focus_time_;
+
   DISALLOW_COPY_AND_ASSIGN(FrameTreeNode);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_FRAME_TREE_NODE_H_