Revert of Use webrtc::VideoFrame timestamp in RTCVideoEncoder

media/gpu/video_encode_accelerator_unittest.cc

Index: media/gpu/video_encode_accelerator_unittest.cc
diff --git a/media/gpu/video_encode_accelerator_unittest.cc b/media/gpu/video_encode_accelerator_unittest.cc
index 07a8b1caa3bf8f7f926ef842b5026c7660e14ce4..ae28ea813655d2e695445076b0b73379b4221862 100644
--- a/media/gpu/video_encode_accelerator_unittest.cc
+++ b/media/gpu/video_encode_accelerator_unittest.cc
@@ -570,9 +570,6 @@
 void H264Validator::ProcessStreamBuffer(const uint8_t* stream, size_t size) {
   h264_parser_.SetStream(stream, static_cast<off_t>(size));
 
-  // Run |frame_cb_| for only first nalu.
-  bool frame_cb_called = false;
-
   while (1) {
     H264NALU nalu;
     H264Parser::Result result;
@@ -593,14 +590,10 @@
         keyframe = true;
       // fallthrough
       case H264NALU::kNonIDRSlice: {
-        // Stream may contain at most one frame.
         ASSERT_TRUE(seen_idr_);
         seen_sps_ = seen_pps_ = false;
-        if (!frame_cb_called) {
-          frame_cb_called = true;
-          if (!frame_cb_.Run(keyframe))
-            return;
-        }
+        if (!frame_cb_.Run(keyframe))
+          return;
         break;
       }
 
@@ -1850,15 +1843,6 @@
                                                           false,
                                                           false,
                                                           false)));
-
-#if defined(OS_MACOSX)
-INSTANTIATE_TEST_CASE_P(
-    VerifyTimestamp,
-    VideoEncodeAcceleratorTest,
-    ::testing::Values(
-        std::make_tuple(1, false, 0, false, false, false, false, false, true)));
-#endif  // defined(OS_MACOSX)
-
 #if defined(OS_WIN)
 INSTANTIATE_TEST_CASE_P(
     ForceBitrate,