Parent the AppInfoDialog using a ModalDialogHost

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 "components/web_modal/modal_dialog_host.h"
 #include "ui/gfx/native_widget_types.h"
 
 class Profile;
 
 namespace extensions {
 class Extension;
 }
 
 namespace gfx {
 class Rect;
 class Size;
 }
 
 // Used for UMA to track where the App Info dialog is launched from.
 enum AppInfoLaunchSource {
   FROM_APP_LIST,         // Launched from the app list context menu.
   FROM_EXTENSIONS_PAGE,  // Launched from the chrome://extensions page.
   NUM_LAUNCH_SOURCES,
 };
 
 // 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);
-
-// Shows the chrome app information in a native dialog box of the given |size|.
-void ShowAppInfoInNativeDialog(gfx::NativeWindow parent,
-                               const gfx::Size& size,
-                               Profile* profile,
-                               const extensions::Extension* app,
-                               const base::Closure& close_callback);
+// and |profile|. Uses |host| to determine position and bounds. Observes |host|
+// and closes itself when |host| is destroyed.
+void ShowAppInfoModally(web_modal::ModalDialogHost* host,
+                        const gfx::Size& size,
+                        Profile* profile,
+                        const extensions::Extension* app,
+                        const base::Closure& close_callback);
 
 #endif  // CHROME_BROWSER_UI_APPS_APP_INFO_DIALOG_H_