Fix timestamp issue in RTCVideoEncoder for native frames

content/renderer/media/gpu/rtc_video_encoder.cc

 // Copyright 2013 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.
 
 #include "content/renderer/media/gpu/rtc_video_encoder.h"
 
 #include <string.h>
 
 #include <deque>
 #include <memory>
@@ skipping 600 matching lines @@
     frame = static_cast<WebRtcVideoFrameAdapter*>(
                 next_frame->video_frame_buffer().get())
                 ->getMediaVideoFrame();
     requires_copy = RequiresSizeChange(frame) ||
                     frame->storage_type() != media::VideoFrame::STORAGE_SHMEM;
   } else {
     requires_copy = true;
   }
 
   if (requires_copy) {
+    // TODO(magjed/emircan): This check is needed in order for the
+    // |pending_timestamps_| DHCECK below to not fail. It shouldn't be
+    // necessary.
+    const bool use_media_timestamp =
+        frame && (frame->HasTextures() ||
+                  frame->storage_type() == media::VideoFrame::STORAGE_SHMEM);
     const base::TimeDelta timestamp =
-        frame ? frame->timestamp()
-              : base::TimeDelta::FromMilliseconds(next_frame->ntp_time_ms());
+        use_media_timestamp
+            ? frame->timestamp()
+            : base::TimeDelta::FromMilliseconds(next_frame->ntp_time_ms());
     base::SharedMemory* input_buffer = input_buffers_[index].get();
     frame = media::VideoFrame::WrapExternalSharedMemory(
         media::PIXEL_FORMAT_I420, input_frame_coded_size_,
         gfx::Rect(input_visible_size_), input_visible_size_,
         reinterpret_cast<uint8_t*>(input_buffer->memory()),
         input_buffer->mapped_size(), input_buffer->handle(), 0, timestamp);
     if (!frame.get()) {
       LogAndNotifyError(FROM_HERE, "failed to create frame",
                         media::VideoEncodeAccelerator::kPlatformFailureError);
       return;
@@ skipping 304 matching lines @@
   UMA_HISTOGRAM_BOOLEAN("Media.RTCVideoEncoderInitEncodeSuccess",
                         init_retval == WEBRTC_VIDEO_CODEC_OK);
   if (init_retval == WEBRTC_VIDEO_CODEC_OK) {
     UMA_HISTOGRAM_ENUMERATION("Media.RTCVideoEncoderProfile",
                               profile,
                               media::VIDEO_CODEC_PROFILE_MAX + 1);
   }
 }
 
 }  // namespace content