Limit number of warnings for large audio delay.

Bug: 881224
Change-Id: Ic6f18c1a7b5164175a70c9ebaade6722244b02fa
Reviewed-on: https://chromium-review.googlesource.com/1208271Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Commit-Queue: Max Morin <maxmorin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#589133}

content/renderer/media/stream/media_stream_audio_processor.cc

@@ -752,9 +752,10 @@ int MediaStreamAudioProcessor::ProcessData(const float* const* process_ptrs,
                render_delay_ms);
 
   int total_delay_ms =  capture_delay_ms + render_delay_ms;
-  if (total_delay_ms > 300) {
+  if (total_delay_ms > 300 && large_delay_log_count_ < 10) {
     LOG(WARNING) << "Large audio delay, capture delay: " << capture_delay_ms
                  << "ms; render delay: " << render_delay_ms << "ms";
+    ++large_delay_log_count_;
   }
 
   webrtc::AudioProcessing* ap = audio_processing_.get();

content/renderer/media/stream/media_stream_audio_processor.h

@@ -213,6 +213,7 @@ class CONTENT_EXPORT MediaStreamAudioProcessor
   // Counters to avoid excessively logging errors in OnPlayoutData.
   size_t unsupported_buffer_size_log_count_ = 0;
   size_t apm_playout_error_code_log_count_ = 0;
+  size_t large_delay_log_count_ = 0;
 
   // Object for logging UMA stats for echo information when the AEC is enabled.
   // Accessed on the main render thread.