Merge 202233 "Allow sample rate pass through on Linux."

content/renderer/media/audio_renderer_mixer_manager.cc

Index: content/renderer/media/audio_renderer_mixer_manager.cc
===================================================================
--- content/renderer/media/audio_renderer_mixer_manager.cc	(revision 204027)
+++ content/renderer/media/audio_renderer_mixer_manager.cc	(working copy)
@@ -52,9 +52,9 @@
     return it->second.mixer;
   }
 
-  // On ChromeOS we can rely on the playback device to handle resampling, so
-  // don't waste cycles on it here.
-#if defined(OS_CHROMEOS)
+  // On ChromeOS and Linux we can rely on the playback device to handle
+  // resampling, so don't waste cycles on it here.
+#if defined(OS_CHROMEOS) || defined(OS_LINUX)
   int sample_rate = params.sample_rate();
 #else
   int sample_rate = hardware_config_->GetOutputSampleRate();