Remove BrowserList::GetLastActive usage from WebUI pages.

chrome/browser/ui/browser_list.h

 // Copyright (c) 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.
 
 #ifndef CHROME_BROWSER_UI_BROWSER_LIST_H_
 #define CHROME_BROWSER_UI_BROWSER_LIST_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 90 matching lines @@
   static bool IsOffTheRecordSessionActive();
 
   // Returns true if at least one incognito session is active for |profile|.
   static bool IsOffTheRecordSessionActiveForProfile(Profile* profile);
 
  private:
   // DO NOT ADD MORE FRIENDS TO THIS LIST. This list should be reduced over
   // time by wiring context through to the relevant code rather than using
   // GetLastActive().
   friend class BrowserView;
-  friend class CertificateViewerDialog;
   friend class ChromeShellDelegate;
   friend class ExtensionInstallDialogView;
-  friend class FeedbackHandler;
   friend class GtkThemeService;
   friend class NetworkProfileBubble;
   friend class PrintPreviewHandler;
   friend class QueryTabsFunction;
   friend class SelectFileDialogExtension;
   friend class StartupBrowserCreatorImpl;
   friend class TaskManager;
   friend class TestingAutomationProvider;
   friend class WindowSizer;
   friend class browser::BrowserActivityObserver;
@@ skipping 28 matching lines @@
   // WARNING #2: this will always be NULL in unit tests run on the bots.
   // THIS FUNCTION IS PRIVATE AND NOT TO BE USED AS A REPLACEMENT FOR RELEVANT
   // CONTEXT.
   static Browser* GetLastActive();
 
   // Helper method to remove a browser instance from a list of browsers
   static void RemoveBrowserFrom(Browser* browser, BrowserVector* browser_list);
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_LIST_H_