Move about://-related constants from //content to //url

chrome/browser/ui/blocked_content/popup_blocker_browsertest.cc

 // Copyright 2013 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 "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 448 matching lines @@
 }
 
 IN_PROC_BROWSER_TEST_F(PopupBlockerBrowserTest, WebUI) {
   WebContents* popup =
       RunCheckTest(browser(),
                    "/popup_blocker/popup-webui.html",
                    ExpectPopup,
                    DontCheckTitle);
 
   // Check that the new popup displays about:blank.
-  EXPECT_EQ(GURL(content::kAboutBlankURL), popup->GetURL());
+  EXPECT_EQ(GURL(url::kAboutBlankURL), popup->GetURL());
 }
 
 // Verify that the renderer can't DOS the browser by creating arbitrarily many
 // popups.
 IN_PROC_BROWSER_TEST_F(PopupBlockerBrowserTest, DenialOfService) {
   GURL url(embedded_test_server()->GetURL("/popup_blocker/popup-dos.html"));
   ui_test_utils::NavigateToURL(browser(), url);
   ASSERT_EQ(25, GetBlockedContentsCount());
 }
 
 }  // namespace