[Cast] Halt AudioSender transmission when too many frames are in-flight.

media/cast/audio_sender/audio_encoder.cc

Index: media/cast/audio_sender/audio_encoder.cc
diff --git a/media/cast/audio_sender/audio_encoder.cc b/media/cast/audio_sender/audio_encoder.cc
index f81ad26377abd11eab0c89350f167a29ad096ac0..8860c7dd2d87b31f0a939f19fd65911a88a1eca2 100644
--- a/media/cast/audio_sender/audio_encoder.cc
+++ b/media/cast/audio_sender/audio_encoder.cc
@@ -9,14 +9,12 @@
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/location.h"
-#include "base/logging.h"
 #include "base/stl_util.h"
 #include "base/sys_byteorder.h"
 #include "base/time/time.h"
 #include "media/base/audio_bus.h"
 #include "media/cast/cast_defines.h"
 #include "media/cast/cast_environment.h"
-#include "media/cast/logging/logging_defines.h"
 #include "third_party/opus/src/include/opus.h"
 
 namespace media {
@@ -33,28 +31,6 @@ const int kFrameDurationMillis = 1000 / kFramesPerSecond;  // No remainder!
 // coming in too slow with respect to the capture timestamps.
 const int kUnderrunThresholdMillis = 3 * kFrameDurationMillis;
 
-void LogAudioFrameEncodedEvent(
-    const scoped_refptr<media::cast::CastEnvironment>& cast_environment,
-    base::TimeTicks event_time,
-    media::cast::RtpTimestamp rtp_timestamp,
-    uint32 frame_id,
-    size_t frame_size) {
-  if (!cast_environment->CurrentlyOn(CastEnvironment::MAIN)) {
-    cast_environment->PostTask(
-        CastEnvironment::MAIN,
-        FROM_HERE,
-        base::Bind(&LogAudioFrameEncodedEvent,
-                   cast_environment, event_time,
-                   rtp_timestamp, frame_id, frame_size));
-    return;
-  }
-  cast_environment->Logging()->InsertEncodedFrameEvent(
-      event_time, media::cast::FRAME_ENCODED, media::cast::AUDIO_EVENT,
-      rtp_timestamp, frame_id,
-      static_cast<int>(frame_size), /* key_frame - unused */ false,
-      /*target_bitrate - unused*/ 0);
-}
-
 }  // namespace
 
 
@@ -150,11 +126,6 @@ class AudioEncoder::ImplBase
       audio_frame->reference_time = frame_capture_time_;
 
       if (EncodeFromFilledBuffer(&audio_frame->data)) {
-        LogAudioFrameEncodedEvent(cast_environment_,
-                                  cast_environment_->Clock()->NowTicks(),
-                                  audio_frame->rtp_timestamp,
-                                  audio_frame->frame_id,
-                                  audio_frame->data.size());
         cast_environment_->PostTask(
             CastEnvironment::MAIN,
             FROM_HERE,