[ash] Add TYPE_DIALOG and its item's LauncherContextMenu

chrome/browser/ui/ash/chrome_shell_delegate.h

Index: chrome/browser/ui/ash/chrome_shell_delegate.h
diff --git a/chrome/browser/ui/ash/chrome_shell_delegate.h b/chrome/browser/ui/ash/chrome_shell_delegate.h
index ad360e024530aa69e4320160eed6ab8c6a854448..82567d3337548170c86d9619735381db2f5baca3 100644
--- a/chrome/browser/ui/ash/chrome_shell_delegate.h
+++ b/chrome/browser/ui/ash/chrome_shell_delegate.h
@@ -17,6 +17,10 @@
 
 class Browser;
 
+namespace ash {
+class ShelfItemDelegate;
+}
+
 namespace content {
 class WebContents;
 }
@@ -57,7 +61,10 @@ class ChromeShellDelegate : public ash::ShellDelegate,
   virtual ash::NewWindowDelegate* CreateNewWindowDelegate() OVERRIDE;
   virtual ash::MediaDelegate* CreateMediaDelegate() OVERRIDE;
   virtual aura::client::UserActionClient* CreateUserActionClient() OVERRIDE;
-  virtual ui::MenuModel* CreateContextMenu(aura::Window* root) OVERRIDE;
+  virtual ui::MenuModel* CreateContextMenu(
+      aura::Window* root,
+      ash::ShelfItemDelegate* item_delegate,
+      ash::LauncherItem* item) OVERRIDE;
   virtual ash::RootWindowHostFactory* CreateRootWindowHostFactory() OVERRIDE;
   virtual base::string16 GetProductName() const OVERRIDE;