Support for AudioContextOptions latencyHint.

content/public/renderer/content_renderer_client.h

Index: content/public/renderer/content_renderer_client.h
diff --git a/content/public/renderer/content_renderer_client.h b/content/public/renderer/content_renderer_client.h
index 92598b4b5c75eb034d29addb094424ef83217127..805ebdc744070c8e934f7afd59ccc0e6debc023c 100644
--- a/content/public/renderer/content_renderer_client.h
+++ b/content/public/renderer/content_renderer_client.h
@@ -178,7 +178,8 @@ class CONTENT_EXPORT ContentRendererClient {
   // Allows the embedder to override creating a WebAudioDevice.  If it
   // returns NULL the content layer will create the audio device.
   virtual blink::WebAudioDevice* OverrideCreateAudioDevice(
-      double sample_rate);
+      double sample_rate,
+      int frames_per_buffer);
 
   // Allows the embedder to override the blink::WebClipboard used. If it
   // returns NULL the content layer will handle clipboard interactions.