Move enable extensions define to a build flag.

chrome/browser/ui/unload_controller.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/ui/unload_controller.h"
 
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/devtools/devtools_window.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
+#include "extensions/features/features.h"
 
-#if defined (ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
 #include "extensions/browser/extension_registry.h"
 #include "extensions/common/constants.h"
 #endif  // (ENABLE_EXTENSIONS)
 
 namespace chrome {
 
 ////////////////////////////////////////////////////////////////////////////////
 // UnloadController, public:
 
 UnloadController::UnloadController(Browser* browser)
@@ skipping 17 matching lines @@
 }
 
 bool UnloadController::ShouldRunUnloadEventsHelper(
     content::WebContents* contents) {
   // If |contents| is being inspected, devtools needs to intercept beforeunload
   // events.
   return DevToolsWindow::GetInstanceForInspectedWebContents(contents) != NULL;
 }
 
 bool UnloadController::RunUnloadEventsHelper(content::WebContents* contents) {
-#if defined (ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
   // Don't run for extensions that are disabled or uninstalled; the tabs will
   // be killed if they make any network requests, and the extension shouldn't
   // be doing any work if it's removed.
   GURL url = contents->GetLastCommittedURL();
   if (url.SchemeIs(extensions::kExtensionScheme) &&
       !extensions::ExtensionRegistry::Get(browser_->profile())
            ->enabled_extensions()
            .GetExtensionOrAppByURL(url)) {
     return false;
   }
@@ skipping 309 matching lines @@
       ProcessPendingTabs();
     } else {
       base::ThreadTaskRunnerHandle::Get()->PostTask(
           FROM_HERE, base::Bind(&UnloadController::ProcessPendingTabs,
                                 weak_factory_.GetWeakPtr()));
     }
   }
 }
 
 }  // namespace chrome