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

chrome/browser/tab_contents/tab_contents.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/tab_contents.h"
 
 #if defined(OS_CHROMEOS)
 // For GdkScreen
 #include <gdk/gdk.h>
 #endif  // defined(OS_CHROMEOS)
@@ skipping 797 matching lines @@
       NotificationType::TAB_CONTENTS_HIDDEN,
       Source<TabContents>(this),
       NotificationService::NoDetails());
 }
 
 void TabContents::Activate() {
   if (delegate_)
     delegate_->ActivateContents(this);
 }
 
+void TabContents::Deactivate() {
+  if (delegate_)
+    delegate_->DeactivateContents(this);
+}
+
 void TabContents::ShowContents() {
   RenderWidgetHostView* rwhv = GetRenderWidgetHostView();
   if (rwhv)
     rwhv->DidBecomeSelected();
 }
 
 void TabContents::HideContents() {
   // TODO(pkasting): http://b/1239839  Right now we purposefully don't call
   // our superclass HideContents(), because some callers want to be very picky
   // about the order in which these get called.  In addition to making the code
@@ skipping 2442 matching lines @@
   AddInfoBar(new SavePasswordInfoBarDelegate(this, form_to_save));
 }
 
 Profile* TabContents::GetProfileForPasswordManager() {
   return profile();
 }
 
 bool TabContents::DidLastPageLoadEncounterSSLErrors() {
   return controller().ssl_manager()->ProcessedSSLErrorFromRequest();
 }