Adds support for Bluetooth headsets to the iOS audio layer

webrtc/modules/audio_device/fine_audio_buffer.cc

 /*
  *  Copyright (c) 2013 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 97 matching lines @@
   RTC_CHECK_LE(playout_cached_bytes_, bytes_per_10_ms_);
   RTC_CHECK_EQ(static_cast<size_t>(-bytes_left), playout_cached_bytes_);
   playout_cached_buffer_start_ = 0;
   memcpy(playout_cache_buffer_.get(), cache_ptr, playout_cached_bytes_);
 }
 
 void FineAudioBuffer::DeliverRecordedData(const int8_t* buffer,
                                           size_t size_in_bytes,
                                           int playout_delay_ms,
                                           int record_delay_ms) {
-  RTC_CHECK_EQ(size_in_bytes, desired_frame_size_bytes_);
   // Check if the temporary buffer can store the incoming buffer. If not,
   // move the remaining (old) bytes to the beginning of the temporary buffer
   // and start adding new samples after the old samples.
   if (record_write_pos_ + size_in_bytes > required_record_buffer_size_bytes_) {
     if (record_cached_bytes_ > 0) {
       memmove(record_cache_buffer_.get(),
               record_cache_buffer_.get() + record_read_pos_,
               record_cached_bytes_);
     }
     record_write_pos_ = record_cached_bytes_;
@@ skipping 12 matching lines @@
     device_buffer_->SetVQEData(playout_delay_ms, record_delay_ms, 0);
     device_buffer_->DeliverRecordedData();
     // Read next chunk of 10ms data.
     record_read_pos_ += bytes_per_10_ms_;
     // Reduce number of cached bytes with the consumed amount.
     record_cached_bytes_ -= bytes_per_10_ms_;
   }
 }
 
 }  // namespace webrtc