[Remoting Android] Refactor ClientTelemetryLogger

remoting/base/telemetry_log_writer.h

 // Copyright 2016 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 REMOTING_BASE_TELEMETRY_LOG_WRITER_H_
 #define REMOTING_BASE_TELEMETRY_LOG_WRITER_H_
 
 #include <deque>
 #include <string>
 
 #include "base/callback.h"
 #include "base/macros.h"
-#include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "base/values.h"
 #include "remoting/base/chromoting_event.h"
 #include "remoting/base/chromoting_event_log_writer.h"
 #include "remoting/base/url_request.h"
 
 namespace remoting {
 
 // TelemetryLogWriter sends log entries (ChromotingEvent) to the telemetry
 // server.
@@ skipping 38 matching lines @@
 
   // Entries being sent.
   // These will be pushed back to pending_entries if error occurs.
   std::deque<ChromotingEvent> sending_entries_;
 
   DISALLOW_COPY_AND_ASSIGN(TelemetryLogWriter);
 };
 
 }  // namespace remoting
 #endif  // REMOTING_BASE_TELEMETRY_LOG_WRITER_H_