Add desktop engagement metrics.

chrome/browser/ui/views/frame/browser_view.cc

 // Copyright 2012 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/ui/views/frame/browser_view.h"
 
 #include <stdint.h>
 
 #include <algorithm>
 #include <memory>
@@ skipping 1800 matching lines @@
   // BrowserView. By destroying here we ensure all said classes are valid.
   ScopedVector<content::WebContents> contents;
   while (browser()->tab_strip_model()->count())
     contents.push_back(browser()->tab_strip_model()->DetachWebContentsAt(0));
 }
 
 void BrowserView::OnWidgetActivationChanged(views::Widget* widget,
                                             bool active) {
   if (active)
     BrowserList::SetLastActive(browser_.get());
+  else
+    BrowserList::NotifyBrowserNoLongerActive(browser_.get());
 
   if (!extension_keybinding_registry_ &&
       GetFocusManager()) {  // focus manager can be null in tests.
     extension_keybinding_registry_.reset(new ExtensionKeybindingRegistryViews(
         browser_->profile(), GetFocusManager(),
         extensions::ExtensionKeybindingRegistry::ALL_EXTENSIONS, this));
   }
 
   extensions::ExtensionCommandsGlobalRegistry* registry =
       extensions::ExtensionCommandsGlobalRegistry::Get(browser_->profile());
@@ skipping 830 matching lines @@
 }
 
 extensions::ActiveTabPermissionGranter*
 BrowserView::GetActiveTabPermissionGranter() {
   content::WebContents* web_contents = GetActiveWebContents();
   if (!web_contents)
     return nullptr;
   return extensions::TabHelper::FromWebContents(web_contents)
       ->active_tab_permission_granter();
 }