Move enable extensions define to a build flag.

chrome/browser/renderer_context_menu/render_view_context_menu_test_util.h

 // Copyright 2014 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.
 
 #ifndef CHROME_BROWSER_RENDERER_CONTEXT_MENU_RENDER_VIEW_CONTEXT_MENU_TEST_UTIL_H_
 #define CHROME_BROWSER_RENDERER_CONTEXT_MENU_RENDER_VIEW_CONTEXT_MENU_TEST_UTIL_H_
 
 #include <stddef.h>
 
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "chrome/browser/renderer_context_menu/render_view_context_menu.h"
+#include "extensions/features/features.h"
 #include "url/gurl.h"
 
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
 #include "chrome/browser/extensions/context_menu_matcher.h"
 #endif
 
 class Browser;
 
 namespace content {
 class WebContents;
 }
 namespace ui {
 class MenuModel;
@@ skipping 27 matching lines @@
   // Searches for an menu item with |command_id|. If it's found, the return
   // value is true and the model and index where it appears in that model are
   // returned in |found_model| and |found_index|. Otherwise returns false.
   bool GetMenuModelAndItemIndex(int command_id,
                                 ui::MenuModel** found_model,
                                 int* found_index);
 
   // Returns the command id of the menu item with the specified |path|.
   int GetCommandIDByProfilePath(const base::FilePath& path);
 
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
   extensions::ContextMenuMatcher& extension_items() { return extension_items_; }
 #endif
 
   void set_protocol_handler_registry(ProtocolHandlerRegistry* registry) {
     protocol_handler_registry_ = registry;
   }
 
   using RenderViewContextMenu::AppendImageItems;
 
   void Show() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TestRenderViewContextMenu);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_CONTEXT_MENU_RENDER_VIEW_CONTEXT_MENU_TEST_UTIL_H_