Fix gn_all build on gcc 4.8

chrome/browser/policy/policy_browsertest.cc

 // 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.
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
 #include <memory>
 #include <string>
@@ skipping 3111 matching lines @@
 
 class MediaStreamDevicesControllerBrowserTest
     : public PolicyTest,
       public testing::WithParamInterface<bool> {
  public:
   // TODO(raymes): When crbug.com/606138 is finished and the
   // PermissionRequestManager is used to show all prompts on Android/Desktop
   // we should remove PermissionPromptDelegate and just use
   // MockPermissionPromptFactory instead. The APIs are the same.
   class TestPermissionPromptDelegate
-      : public MediaStreamDevicesController::PermissionPromptDelegate {
+      : public ::internal::PermissionPromptDelegate {
    public:
     void ShowPrompt(
         bool user_gesture,
         content::WebContents* web_contents,
         std::unique_ptr<MediaStreamDevicesController> controller) override {
       if (response_type_ == PermissionRequestManager::ACCEPT_ALL)
         controller->PermissionGranted();
       else if (response_type_ == PermissionRequestManager::DENY_ALL)
         controller->PermissionDenied();
     }
@@ skipping 1327 matching lines @@
 
   SetEmptyPolicy();
   // Policy not set.
   CheckSystemTimezoneAutomaticDetectionPolicyUnset();
   EXPECT_TRUE(CheckResolveTimezoneByGeolocation(true, false));
   EXPECT_TRUE(manager->TimeZoneResolverShouldBeRunningForTests());
 }
 #endif  // defined(OS_CHROMEOS)
 
 }  // namespace policy