Change default timestamp to 64 bits in all webrtc directories.

webrtc/base/logging.h

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 138 matching lines @@
   ~LogMessage();
 
   static inline bool Loggable(LoggingSeverity sev) { return (sev >= min_sev_); }
   std::ostream& stream() { return print_stream_; }
 
   // Returns the time at which this function was called for the first time.
   // The time will be used as the logging start time.
   // If this is not called externally, the LogMessage ctor also calls it, in
   // which case the logging start time will be the time of the first LogMessage
   // instance is created.
-  static uint32_t LogStartTime();
+  static int64_t LogStartTime();
 
   // Returns the wall clock equivalent of |LogStartTime|, in seconds from the
   // epoch.
   static uint32_t WallClockStartTime();
 
   //  LogThreads: Display the thread identifier of the current thread
   static void LogThreads(bool on = true);
 
   //  LogTimestamps: Display the elapsed time of the program
   static void LogTimestamps(bool on = true);
@@ skipping 186 matching lines @@
 #define PLOG(sev, err) \
   LOG_ERR_EX(sev, err)
 
 // TODO(?): Add an "assert" wrapper that logs in the same manner.
 
 #endif  // LOG
 
 }  // namespace rtc
 
 #endif  // WEBRTC_BASE_LOGGING_H_