Implement a permission check for push.

chrome/browser/services/gcm/gcm_permission_context.h

+// Copyright 2014 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.
+
+#ifndef CHROME_BROWSER_SERVICES_GCM_GCM_PERMISSION_CONTEXT_H_
+#define CHROME_BROWSER_SERVICES_GCM_GCM_PERMISSION_CONTEXT_H_
+
+#include "chrome/browser/services/gcm/permission_context_base.h"
+
+namespace gcm {
+
+// Permission context for push messages.
+class GCMPermissionContext : public PermissionContextBase {
+ public:
+  explicit GCMPermissionContext(Profile* profile);
+  virtual ~GCMPermissionContext();
+
+  DISALLOW_COPY_AND_ASSIGN(GCMPermissionContext);
+};
+
+}  // namespace gcm
+#endif  // CHROME_BROWSER_SERVICES_GCM_GCM_PERMISSION_CONTEXT_H_