Move enable extensions define to a build flag.

chrome/browser/browser_about_handler.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_about_handler.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_util.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser_dialogs.h"
 #include "chrome/common/chrome_features.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/url_constants.h"
 #include "components/url_formatter/url_fixer.h"
+#include "extensions/features/features.h"
 
 #if !defined(OS_ANDROID)
 #include "chrome/browser/ui/webui/md_history_ui.h"
 #endif
 
 bool FixupBrowserAboutURL(GURL* url,
                           content::BrowserContext* browser_context) {
   // Ensure that any cleanup done by FixupURL happens before the rewriting
   // phase that determines the virtual URL, by including it in an initial
   // URLHandler.  This prevents minor changes from producing a virtual URL,
@@ skipping 21 matching lines @@
   // Replace about with chrome-urls.
   if (host == chrome::kChromeUIAboutHost)
     host = chrome::kChromeUIChromeURLsHost;
   // Replace cache with view-http-cache.
   if (host == chrome::kChromeUICacheHost) {
     host = content::kChromeUINetworkViewCacheHost;
   // Replace sync with sync-internals (for legacy reasons).
   } else if (host == chrome::kChromeUISyncHost) {
     host = chrome::kChromeUISyncInternalsHost;
   // Redirect chrome://extensions.
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
   } else if (host == chrome::kChromeUIExtensionsHost) {
     // If the material design extensions page is enabled, it gets its own host.
     // Otherwise, it's handled by the uber settings page.
     if (base::FeatureList::IsEnabled(features::kMaterialDesignExtensions)) {
       host = chrome::kChromeUIExtensionsHost;
       path = url->path();
     } else {
       host = chrome::kChromeUIUberHost;
       path = chrome::kChromeUIExtensionsHost + url->path();
     }
   // Redirect chrome://settings/extensions (legacy URL).
   } else if (host == chrome::kChromeUISettingsHost &&
       url->path() == std::string("/") + chrome::kExtensionsSubPage) {
     host = chrome::kChromeUIUberHost;
     path = chrome::kChromeUIExtensionsHost;
-#endif  // defined(ENABLE_EXTENSIONS)
+#endif  // BUILDFLAG(ENABLE_EXTENSIONS)
   // Redirect chrome://history.
   } else if (host == chrome::kChromeUIHistoryHost) {
 #if defined(OS_ANDROID)
     // On Android, redirect directly to chrome://history-frame since
     // uber page is unsupported.
     host = chrome::kChromeUIHistoryFrameHost;
 #else
     // Material design history is handled on the top-level chrome://history
     // host.
     if (MdHistoryUI::IsEnabled(Profile::FromBrowserContext(browser_context))) {
@@ skipping 49 matching lines @@
         FROM_HERE, base::Bind(&chrome::AttemptRestart));
     return true;
   } else if (base::LowerCaseEqualsASCII(spec, chrome::kChromeUIQuitURL)) {
     base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE, base::Bind(&chrome::AttemptExit));
     return true;
   }
 
   return false;
 }