Adding some stubs for some InfoBars on Android.

chrome/browser/ui/android/infobar_stubs.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/logging.h"
+#include "chrome/browser/extensions/extension_infobar_delegate.h"
+#include "chrome/browser/tab_contents/confirm_infobar_delegate.h"
+
+// Infobars are implemented in Java on Android.
+
+InfoBar* ConfirmInfoBarDelegate::CreateInfoBar(InfoBarTabHelper* owner) {
+  NOTIMPLEMENTED();
+  return NULL;
+}
+
+InfoBar* ExtensionInfoBarDelegate::CreateInfoBar(InfoBarTabHelper* owner) {
+  NOTIMPLEMENTED();
+  return NULL;
+}