Change status button menu implementation from Menu2 to MenuItemView.

chrome/browser/chromeos/status/network_menu_button.cc

Index: chrome/browser/chromeos/status/network_menu_button.cc
diff --git a/chrome/browser/chromeos/status/network_menu_button.cc b/chrome/browser/chromeos/status/network_menu_button.cc
index 1f7d16491370ac24fbae49a4cb95a655642fe385..2146c376afcab135cc3bde80bd34e5071bc1267c 100644
--- a/chrome/browser/chromeos/status/network_menu_button.cc
+++ b/chrome/browser/chromeos/status/network_menu_button.cc
@@ -111,6 +111,10 @@ bool NetworkMenuButton::IsBrowserMode() const {
   return host_->GetScreenMode() == StatusAreaHost::kBrowserMode;
 }
 
+views::MenuButton* NetworkMenuButton::GetMenuButton() {
+  return this;
+}
+
 gfx::NativeWindow NetworkMenuButton::GetNativeWindow() const {
   return host_->GetNativeWindow();
 }