Move enable extensions define to a build flag.

chrome/browser/ui/browser.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_BROWSER_H_
 #define CHROME_BROWSER_UI_BROWSER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 27 matching lines @@
 #include "components/prefs/pref_change_registrar.h"
 #include "components/sessions/core/session_id.h"
 #include "components/toolbar/toolbar_model.h"
 #include "components/translate/content/browser/content_translate_driver.h"
 #include "components/zoom/zoom_observer.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/page_navigator.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/common/page_zoom.h"
+#include "extensions/features/features.h"
 #include "ui/base/page_transition_types.h"
 #include "ui/base/ui_base_types.h"
 #include "ui/base/window_open_disposition.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/shell_dialogs/select_file_dialog.h"
 
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
 #include "extensions/browser/extension_registry_observer.h"
 #endif
 
 class BrowserContentSettingBubbleModelDelegate;
 class BrowserInstantController;
 class BrowserSyncedWindowDelegate;
 class BrowserToolbarModelDelegate;
 class BrowserLiveTabContext;
 class BrowserWindow;
 class FindBarController;
@@ skipping 43 matching lines @@
 
 class Browser : public TabStripModelObserver,
                 public content::WebContentsDelegate,
                 public CoreTabHelperDelegate,
                 public SearchTabHelperDelegate,
                 public ChromeWebModalDialogManagerDelegate,
                 public BookmarkTabHelperDelegate,
                 public zoom::ZoomObserver,
                 public content::PageNavigator,
                 public content::NotificationObserver,
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
                 public extensions::ExtensionRegistryObserver,
 #endif
                 public translate::ContentTranslateDriver::Observer,
                 public ui::SelectFileDialog::Listener {
  public:
   // SessionService::WindowType mirrors these values.  If you add to this
   // enum, look at SessionService::WindowType to see if it needs to be
   // updated.
   enum Type {
     // If you add a new type, consider updating the test
@@ skipping 593 matching lines @@
                     void* params) override;
   void FileSelectedWithExtraInfo(const ui::SelectedFileInfo& file_info,
                                  int index,
                                  void* params) override;
 
   // Overridden from content::NotificationObserver:
   void Observe(int type,
                const content::NotificationSource& source,
                const content::NotificationDetails& details) override;
 
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
   // Overridden from extensions::ExtensionRegistryObserver:
   void OnExtensionUninstalled(content::BrowserContext* browser_context,
                               const extensions::Extension* extension,
                               extensions::UninstallReason reason) override;
   void OnExtensionLoaded(content::BrowserContext* browser_context,
                          const extensions::Extension* extension) override;
   void OnExtensionUnloaded(
       content::BrowserContext* browser_context,
       const extensions::Extension* extension,
       extensions::UnloadedExtensionInfo::Reason reason) override;
@@ skipping 121 matching lines @@
       const GURL& target_url,
       const std::string& partition_id,
       content::SessionStorageNamespace* session_storage_namespace);
 
   // Data members /////////////////////////////////////////////////////////////
 
   std::vector<InterstitialObserver*> interstitial_observers_;
 
   content::NotificationRegistrar registrar_;
 
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
   ScopedObserver<extensions::ExtensionRegistry,
                  extensions::ExtensionRegistryObserver>
       extension_registry_observer_;
 #endif
 
   PrefChangeRegistrar profile_pref_registrar_;
 
   // This Browser's type.
   const Type type_;
 
@@ skipping 125 matching lines @@
   // The following factory is used for chrome update coalescing.
   base::WeakPtrFactory<Browser> chrome_updater_factory_;
 
   // The following factory is used to close the frame at a later time.
   base::WeakPtrFactory<Browser> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_H_