Change default timestamp to 64 bits in all webrtc directories.

webrtc/media/engine/webrtcvideocapturer.cc

 /*
  *  Copyright (c) 2011 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 260 matching lines @@
   captured_frames_ = 0;
 
   SetCaptureFormat(&capture_format);
 
   webrtc::VideoCaptureCapability cap;
   if (!FormatToCapability(capture_format, &cap)) {
     LOG(LS_ERROR) << "Invalid capture format specified";
     return CS_FAILED;
   }
 
-  uint32_t start = rtc::Time();
+  int64_t start = rtc::TimeMillis();
   module_->RegisterCaptureDataCallback(*this);
   if (module_->StartCapture(cap) != 0) {
     LOG(LS_ERROR) << "Camera '" << GetId() << "' failed to start";
     module_->DeRegisterCaptureDataCallback();
     async_invoker_.reset();
     SetCaptureFormat(nullptr);
     start_thread_ = nullptr;
     return CS_FAILED;
   }
 
@@ skipping 119 matching lines @@
   pixel_width = 1;
   pixel_height = 1;
   // Convert units from VideoFrame RenderTimeMs to CapturedFrame (nanoseconds).
   time_stamp = sample.render_time_ms() * rtc::kNumNanosecsPerMillisec;
   data_size = rtc::checked_cast<uint32_t>(length);
   data = buffer;
   rotation = sample.rotation();
 }
 
 }  // namespace cricket