Start and stop the GCM service on demand

chrome/browser/services/gcm/fake_gcm_app_handler.h

Index: chrome/browser/services/gcm/fake_gcm_app_handler.h
diff --git a/chrome/browser/services/gcm/fake_gcm_app_handler.h b/chrome/browser/services/gcm/fake_gcm_app_handler.h
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+++ b/chrome/browser/services/gcm/fake_gcm_app_handler.h
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+// Copyright (c) 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_FAKE_GCM_APP_HANDLER_H_
+#define CHROME_BROWSER_SERVICES_GCM_FAKE_GCM_APP_HANDLER_H_
+
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
+#include "components/gcm_driver/gcm_app_handler.h"
+
+namespace base {
+class RunLoop;
+}
+
+namespace gcm {
+
+class FakeGCMAppHandler : public GCMAppHandler {
+ public:
+  enum Event {
+    NO_EVENT,
+    MESSAGE_EVENT,
+    MESSAGES_DELETED_EVENT,
+    SEND_ERROR_EVENT
+  };
+
+  FakeGCMAppHandler();
+  virtual ~FakeGCMAppHandler();
+
+  const Event& received_event() const { return received_event_; }
+  const std::string& app_id() const { return app_id_; }
+  const GCMClient::IncomingMessage& message() const { return message_; }
+  const GCMClient::SendErrorDetails& send_error_details() const {
+    return send_error_details_;
+  }
+
+  void WaitForNotification();
+
+  // GCMAppHandler:
+  virtual void ShutdownHandler() OVERRIDE;
+  virtual void OnMessage(const std::string& app_id,
+                         const GCMClient::IncomingMessage& message) OVERRIDE;
+  virtual void OnMessagesDeleted(const std::string& app_id) OVERRIDE;
+  virtual void OnSendError(
+      const std::string& app_id,
+      const GCMClient::SendErrorDetails& send_error_details) OVERRIDE;
+
+ private:
+  void ClearResults();
+
+  scoped_ptr<base::RunLoop> run_loop_;
+
+  Event received_event_;
+  std::string app_id_;
+  GCMClient::IncomingMessage message_;
+  GCMClient::SendErrorDetails send_error_details_;
+
+  DISALLOW_COPY_AND_ASSIGN(FakeGCMAppHandler);
+};
+
+}  // namespace gcm
+
+#endif  // CHROME_BROWSER_SERVICES_GCM_FAKE_GCM_APP_HANDLER_H_