Use larger buffer sizes for lower power on Linux.

content/renderer/media/audio_renderer_mixer_manager.cc

Index: content/renderer/media/audio_renderer_mixer_manager.cc
diff --git a/content/renderer/media/audio_renderer_mixer_manager.cc b/content/renderer/media/audio_renderer_mixer_manager.cc
index 9fc2e59f83493be436c4dc4687bc88a6ee4b4d63..935fe766f58a85e4688cf9763f7284b140be2178 100644
--- a/content/renderer/media/audio_renderer_mixer_manager.cc
+++ b/content/renderer/media/audio_renderer_mixer_manager.cc
@@ -67,7 +67,7 @@ media::AudioRendererMixer* AudioRendererMixerManager::GetMixer(
   // know that works well for WebAudio and WebRTC.
   media::AudioParameters output_params(
       media::AudioParameters::AUDIO_PCM_LOW_LATENCY, params.channel_layout(),
-      sample_rate, 16, hardware_config_->GetOutputBufferSize());
+      sample_rate, 16, hardware_config_->GetHighLatencyBufferSize());
 
   // If we've created invalid output parameters, simply pass on the input params
   // and let the browser side handle automatic fallback.