Make the Remove Extension dialog modal for win app list.

chrome/browser/ui/app_list/app_list_service.h

Index: chrome/browser/ui/app_list/app_list_service.h
diff --git a/chrome/browser/ui/app_list/app_list_service.h b/chrome/browser/ui/app_list/app_list_service.h
index 80a20b1c11e707bbdda8b239aae881c6ef4d997e..97b8ef6cd9d926eb184d25d601f40b904db31ff9 100644
--- a/chrome/browser/ui/app_list/app_list_service.h
+++ b/chrome/browser/ui/app_list/app_list_service.h
@@ -9,6 +9,7 @@
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "ui/gfx/native_widget_types.h"
 
 class AppListControllerDelegate;
 class CommandLine;
@@ -61,6 +62,9 @@ class AppListService {
   // operating system and shell.
   virtual void EnableAppList() = 0;
 
+  // Get the window the app list is in, or NULL if the app list isn't visible.
+  virtual gfx::NativeWindow GetAppListWindow() = 0;
+
   // Exposed to allow testing of the controller delegate.
   virtual AppListControllerDelegate* CreateControllerDelegate() = 0;