Parent the AppInfoDialog using a ModalDialogHost

chrome/browser/ui/apps/app_info_dialog.h

Index: chrome/browser/ui/apps/app_info_dialog.h
diff --git a/chrome/browser/ui/apps/app_info_dialog.h b/chrome/browser/ui/apps/app_info_dialog.h
index 35989485281d5affe94a9b4534f359d2a86dfef7..0abf5598beae2739d99e8c9713301548912ddab2 100644
--- a/chrome/browser/ui/apps/app_info_dialog.h
+++ b/chrome/browser/ui/apps/app_info_dialog.h
@@ -6,6 +6,7 @@
 #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;
@@ -27,18 +28,12 @@ enum AppInfoLaunchSource {
 };
 
 // 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_