Corrected the emptying of the render queues for the AEC and AECM when these become full.

webrtc/modules/audio_processing/echo_cancellation_impl.cc

Index: webrtc/modules/audio_processing/echo_cancellation_impl.cc
diff --git a/webrtc/modules/audio_processing/echo_cancellation_impl.cc b/webrtc/modules/audio_processing/echo_cancellation_impl.cc
index 65b4c3640767fba9f1bfb02fba092a642816220f..18c815dc00dfca8330fec3f62f46f5ce133dd4f2 100644
--- a/webrtc/modules/audio_processing/echo_cancellation_impl.cc
+++ b/webrtc/modules/audio_processing/echo_cancellation_impl.cc
@@ -166,7 +166,8 @@ int EchoCancellationImpl::ProcessRenderAudio(const AudioBuffer* audio) {
     ReadQueuedRenderData();
 
     // Retry the insert (should always work).
-    RTC_DCHECK_EQ(render_signal_queue_->Insert(&render_queue_buffer_), true);
+    bool result = render_signal_queue_->Insert(&render_queue_buffer_);
+    RTC_DCHECK(result);
   }
 
   return AudioProcessing::kNoError;