Add polling and audio check to copresence.

components/copresence/copresence_manager_impl.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 COMPONENTS_COPRESENCE_COPRESENCE_MANAGER_IMPL_H_
 #define COMPONENTS_COPRESENCE_COPRESENCE_MANAGER_IMPL_H_
 
 #include <string>
 
 #include "base/cancelable_callback.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "components/copresence/public/copresence_manager.h"
 
+namespace base {
+class Timer;
+}
+
 namespace net {
 class URLContextGetter;
 }
 
 namespace copresence {
 
 class DirectiveHandler;
 class ReportRequest;
 class RpcHandler;
 
 struct PendingRequest {
   PendingRequest(const ReportRequest& report,
                  const std::string& app_id,
                  const std::string& auth_token,
                  const StatusCallback& callback);
   ~PendingRequest();
 
   scoped_ptr<ReportRequest> report;
   std::string app_id;
   std::string auth_token;
   StatusCallback callback;
 };
 
 // The implementation for CopresenceManager. Responsible primarily for
 // client-side initialization. The RpcHandler handles all the details
 // of interacting with the server.
+// TODO(rkc): Add tests for this class.
 class CopresenceManagerImpl : public CopresenceManager {
  public:
   ~CopresenceManagerImpl() override;
   void ExecuteReportRequest(const ReportRequest& request,
                             const std::string& app_id,
                             const StatusCallback& callback) override;
 
  private:
   // Create managers with the CopresenceManager::Create() method.
   friend class CopresenceManager;
   CopresenceManagerImpl(CopresenceDelegate* delegate);
 
   void CompleteInitialization();
   void InitStepComplete(const std::string& step, bool success);
 
+  // This function will be called every kPollTimerIntervalMs milliseconds to
+  // poll the server for new messages.
+  void PollForMessages();
+
+  // This function will verify that we can hear the audio we're playing every
+  // kAudioCheckIntervalMs milliseconds.
+  void AudioCheck();
+
   // Belongs to the caller.
   CopresenceDelegate* const delegate_;
 
   int pending_init_operations_;
   base::CancelableCallback<void(bool)> whispernet_init_callback_;
   bool init_failed_;
 
   ScopedVector<PendingRequest> pending_requests_queue_;
 
-  // The RpcHandler depends on the directive handler.
+  // The RpcHandler depends on the directive handler, do not change this order.
   scoped_ptr<DirectiveHandler> directive_handler_;
   scoped_ptr<RpcHandler> rpc_handler_;
 
+  scoped_ptr<base::Timer> poll_timer_;
+  scoped_ptr<base::Timer> audio_check_timer_;
+
   DISALLOW_COPY_AND_ASSIGN(CopresenceManagerImpl);
 };
 
 }  // namespace copresence
 
 #endif  // COMPONENTS_COPRESENCE_COPRESENCE_MANAGER_IMPL_H_