Making window.focus()/blur() work only when user initiated

chrome/browser/tab_contents/match_preview.cc

 // Copyright (c) 2010 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.
 
 #include "chrome/browser/tab_contents/match_preview.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "chrome/browser/tab_contents/navigation_controller.h"
@@ skipping 19 matching lines @@
   virtual void NavigationStateChanged(const TabContents* source,
                                       unsigned changed_flags) {}
   virtual void AddNewContents(TabContents* source,
                               TabContents* new_contents,
                               WindowOpenDisposition disposition,
                               const gfx::Rect& initial_pos,
                               bool user_gesture) {}
   virtual void ActivateContents(TabContents* contents) {
     match_preview_->CommitCurrentPreview();
   }
+  virtual void DeactivateContents(TabContents* contents) {}
   virtual void LoadingStateChanged(TabContents* source) {}
   virtual void CloseContents(TabContents* source) {}
   virtual void MoveContents(TabContents* source, const gfx::Rect& pos) {}
   virtual void DetachContents(TabContents* source) {}
   virtual bool IsPopup(const TabContents* source) const {
     return false;
   }
   virtual TabContents* GetConstrainingContents(TabContents* source) {
     return NULL;
   }
@@ skipping 132 matching lines @@
 void MatchPreview::CommitCurrentPreview() {
   DCHECK(preview_contents_.get());
   if (host_->delegate())
     host_->delegate()->CommitMatchPreview(host_);
 }
 
 TabContents* MatchPreview::ReleasePreviewContents() {
   url_ = GURL();
   return preview_contents_.release();
 }