replaced the string 'chrome-extensions://' with constants

chrome/browser/extensions/extension_crash_recovery_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 "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/extension_browsertest.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/notifications/notification.h"
 #include "chrome/browser/notifications/notification_delegate.h"
 #include "chrome/browser/notifications/notification_ui_manager.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/result_codes.h"
+#include "content/public/common/url_constants.h"
 #include "extensions/browser/extension_host.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/browser/process_manager.h"
 #include "extensions/browser/process_map.h"
+#include "extensions/common/constants.h"
 #include "ui/message_center/message_center.h"
 #include "ui/message_center/notification_list.h"
 
 using content::NavigationController;
 using content::WebContents;
 using extensions::Extension;
 using extensions::ExtensionRegistry;
 
 // Tests are timing out waiting for extension to crash.
 // http://crbug.com/174705
@@ skipping 485 matching lines @@
 // Regression test for issue 71629.
 IN_PROC_BROWSER_TEST_F(MAYBE_ExtensionCrashRecoveryTest,
                        MAYBE_ReloadTabsWithBackgroundPage) {
   TabStripModel* tab_strip = browser()->tab_strip_model();
   const size_t count_before = GetEnabledExtensionCount();
   const size_t crash_count_before = GetTerminatedExtensionCount();
   LoadTestExtension();
 
   // Open a tab extension.
   chrome::NewTab(browser());
-  ui_test_utils::NavigateToURL(
-      browser(),
-      GURL("chrome-extension://" + first_extension_id_ + "/background.html"));
+  ui_test_utils::NavigateToURL(browser(),
+                               GURL(std::string(extensions::kExtensionScheme) +
+                                   content::kStandardSchemeSeparator +
+                                   first_extension_id_ + "/background.html"));
 
   const int tabs_before = tab_strip->count();
   CrashExtension(first_extension_id_);
 
   // Tab should still be open, and extension should be crashed.
   EXPECT_EQ(tabs_before, tab_strip->count());
   EXPECT_EQ(count_before, GetEnabledExtensionCount());
   EXPECT_EQ(crash_count_before + 1, GetTerminatedExtensionCount());
 
   {
     content::WindowedNotificationObserver observer(
         content::NOTIFICATION_LOAD_STOP,
         content::Source<NavigationController>(
             &browser()->tab_strip_model()->GetActiveWebContents()->
                 GetController()));
     chrome::Reload(browser(), CURRENT_TAB);
     observer.Wait();
   }
   // Extension should now be loaded.
   SCOPED_TRACE("after reloading the tab");
   CheckExtensionConsistency(first_extension_id_);
   ASSERT_EQ(count_before + 1, GetEnabledExtensionCount());
   ASSERT_EQ(0U, CountBalloons());
 }