Add Timestamp accessor methods to the EncodedImage class.

Bug: webrtc:9378
Change-Id: I59bf14f631f92f0f4e05f60d4af25641a23a53f9
Reviewed-on: https://webrtc-review.googlesource.com/82100
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Philip Eliasson <philipel@webrtc.org>
Reviewed-by: Rasmus Brandt <brandtr@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23734}
diff --git a/modules/video_coding/receiver.cc b/modules/video_coding/receiver.cc
index a1eeded..4ed61da 100644
--- a/modules/video_coding/receiver.cc
+++ b/modules/video_coding/receiver.cc
@@ -140,7 +140,7 @@
       jitter_buffer_.NextCompleteFrame(max_wait_time_ms);
 
   if (found_frame) {
-    frame_timestamp = found_frame->TimeStamp();
+    frame_timestamp = found_frame->Timestamp();
     min_playout_delay_ms = found_frame->EncodedImage().playout_delay_.min_ms;
     max_playout_delay_ms = found_frame->EncodedImage().playout_delay_.max_ms;
   } else {
@@ -212,7 +212,7 @@
     return NULL;
   }
   frame->SetRenderTime(render_time_ms);
-  TRACE_EVENT_ASYNC_STEP1("webrtc", "Video", frame->TimeStamp(), "SetRenderTS",
+  TRACE_EVENT_ASYNC_STEP1("webrtc", "Video", frame->Timestamp(), "SetRenderTS",
                           "render_time", frame->RenderTimeMs());
   if (!frame->Complete()) {
     // Update stats for incomplete frames.