b/388556893

Allow WebAudio FIFO size to match callback buffer if it is very large

The Web Audio FIFO is over-allocated to allow for growing if there are
buffer xruns.  However, on some Android devices there is a very large
callback buffer which will fail a CHECK.  Just match the callback
buffer size in this case, to avoid crashing.

Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5293168

(cherry picked from commit 01cb952243ee9efca53b66f50d3026aeb5443049)

third_party/blink/renderer/platform/audio/audio_destination.cc

@@ -316,9 +316,10 @@ AudioDestination::AudioDestination(
           context_sample_rate.has_value()
               ? context_sample_rate.value()
               : (web_audio_device_ ? web_audio_device_->SampleRate() : 0)),
-      fifo_(std::make_unique<PushPullFIFO>(number_of_output_channels,
-                                           kFIFOSize,
-                                           render_quantum_frames)),
+      fifo_(std::make_unique<PushPullFIFO>(
+          number_of_output_channels,
+          std::max(kFIFOSize, callback_buffer_size_ + render_quantum_frames),
+          render_quantum_frames)),
       output_bus_(AudioBus::Create(number_of_output_channels,
                                    render_quantum_frames,
                                    false)),
@@ -355,9 +356,6 @@ AudioDestination::AudioDestination(
     fifo_->Push(render_bus_.get());
   }
 
-  // Check if the requested buffer size is too large.
-  DCHECK_LE(callback_buffer_size_ + render_quantum_frames, kFIFOSize);
-
   double scale_factor = 1.0;
 
   if (context_sample_rate_ != web_audio_device_->SampleRate()) {