Increase the buffer size in AudioRendererImpl to fix muted playback rate

content/browser/renderer_host/media/audio_input_renderer_host.cc

Index: content/browser/renderer_host/media/audio_input_renderer_host.cc
diff --git a/content/browser/renderer_host/media/audio_input_renderer_host.cc b/content/browser/renderer_host/media/audio_input_renderer_host.cc
index de3fe096b17f9c0f0ac2b25a295acd5935e0bd61..761f89567a0212ec698ba5cf583b6aea6e55c906 100644
--- a/content/browser/renderer_host/media/audio_input_renderer_host.cc
+++ b/content/browser/renderer_host/media/audio_input_renderer_host.cc
@@ -8,11 +8,11 @@
 #include "base/metrics/histogram.h"
 #include "base/process.h"
 #include "base/shared_memory.h"
-#include "content/browser/renderer_host/media/audio_common.h"
 #include "content/browser/renderer_host/media/audio_input_device_manager.h"
 #include "content/browser/renderer_host/media/audio_input_sync_writer.h"
 #include "content/browser/renderer_host/media/media_stream_manager.h"
 #include "content/common/media/audio_messages.h"
+#include "media/audio/audio_util.h"
 
 using content::BrowserMessageFilter;
 using content::BrowserThread;
@@ -211,7 +211,8 @@ void AudioInputRendererHost::OnCreateStream(int stream_id,
 
   // Select the hardware packet size if not specified.
   if (!audio_params.samples_per_packet) {
-    audio_params.samples_per_packet = SelectSamplesPerPacket(audio_params);
+    audio_params.samples_per_packet =
+        media::SelectSamplesPerPacket(audio_params.sample_rate);
   }
   uint32 packet_size = audio_params.GetPacketSize();