Move enable_app_list to a buildflag.

chrome/browser/ui/apps/app_info_dialog.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_UI_APPS_APP_INFO_DIALOG_H_
 #define CHROME_BROWSER_UI_APPS_APP_INFO_DIALOG_H_
 
 #include "base/callback_forward.h"
+#include "chrome/common/features.h"
 #include "ui/gfx/native_widget_types.h"
 
 class Profile;
 
 namespace content {
 class WebContents;
 }
 
 namespace extensions {
 class Extension;
@@ skipping 12 matching lines @@
   NUM_LAUNCH_SOURCES,
 };
 
 // TODO(tsergeant): Move these methods into a class
 // Returns true if the app info dialog is available on the current platform.
 bool CanShowAppInfoDialog();
 
 // Returns the size of the native window container for the app info dialog.
 gfx::Size GetAppInfoNativeDialogSize();
 
-#if defined(ENABLE_APP_LIST)
+#if BUILDFLAG(ENABLE_APP_LIST)
 // Shows the chrome app information as a frameless window for the given |app|
 // and |profile| at the given |app_list_bounds|. Appears 'inside' the app list.
 void ShowAppInfoInAppList(gfx::NativeWindow parent,
                           const gfx::Rect& app_list_bounds,
                           Profile* profile,
                           const extensions::Extension* app,
                           const base::Closure& close_callback);
 #endif
 
 // Shows the chrome app information in a native dialog box of the given |size|.
 void ShowAppInfoInNativeDialog(content::WebContents* web_contents,
                                const gfx::Size& size,
                                Profile* profile,
                                const extensions::Extension* app,
                                const base::Closure& close_callback);
 
 #endif  // CHROME_BROWSER_UI_APPS_APP_INFO_DIALOG_H_