Add support for a context menu on the browser shortcut icon

ash/shell/launcher_delegate_impl.h

Index: ash/shell/launcher_delegate_impl.h
diff --git a/ash/shell/launcher_delegate_impl.h b/ash/shell/launcher_delegate_impl.h
index 9a43a129784081cec0de07fcee6d6c32ab34740f..fe18bf45ea068d036d6261f5a6cf443ed6c26d6a 100644
--- a/ash/shell/launcher_delegate_impl.h
+++ b/ash/shell/launcher_delegate_impl.h
@@ -28,6 +28,7 @@ class LauncherDelegateImpl : public ash::LauncherDelegate {
   // LauncherDelegate overrides:
   virtual void CreateNewTab() OVERRIDE;
   virtual void CreateNewWindow() OVERRIDE;
+  virtual void CreateNewIncognitoWindow() OVERRIDE;
   virtual void ItemClicked(const ash::LauncherItem& item) OVERRIDE;
   virtual int GetBrowserShortcutResourceId() OVERRIDE;
   virtual string16 GetTitle(const ash::LauncherItem& item) OVERRIDE;
@@ -35,6 +36,7 @@ class LauncherDelegateImpl : public ash::LauncherDelegate {
       const ash::LauncherItem& item) OVERRIDE;
   virtual ui::MenuModel* CreateContextMenuForLauncher() OVERRIDE;
   virtual ash::LauncherID GetIDByWindow(aura::Window* window) OVERRIDE;
+  virtual bool IsLoggedInAsGuest() OVERRIDE;
 
  private:
   // Used to update Launcher. Owned by main.