Making window.focus()/blur() work only when there is a user gesture.

chrome/browser/views/tabs/dragged_tab_controller.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/views/tabs/dragged_tab_controller.h"
 
 #include <math.h>
 #include <set>
 
 #include "app/animation.h"
@@ skipping 411 matching lines @@
   if (original_delegate_) {
     original_delegate_->AddNewContents(source, new_contents, disposition,
                                        initial_pos, user_gesture);
   }
 }
 
 void DraggedTabController::ActivateContents(TabContents* contents) {
   // Ignored.
 }
 
+void DraggedTabController::DeactivateContents(TabContents* contents) {
+  // Ignored.
+}
+
 void DraggedTabController::LoadingStateChanged(TabContents* source) {
   // It would be nice to respond to this message by changing the
   // screen shot in the dragged tab.
   if (view_.get())
     view_->Update();
 }
 
 void DraggedTabController::CloseContents(TabContents* source) {
   // Theoretically could be called by a window. Should be ignored
   // because window.close() is ignored (usually, even though this
@@ skipping 886 matching lines @@
 #else
     NOTIMPLEMENTED();
 #endif
   }
 }
 
 TabStripModel* DraggedTabController::GetModel(BaseTabStrip* tabstrip) const {
   return static_cast<BrowserTabStripController*>(tabstrip->controller())->
       model();
 }