Support for AudioContextOptions latencyHint.

third_party/WebKit/Source/modules/webaudio/BaseAudioContext.idl

Index: third_party/WebKit/Source/modules/webaudio/BaseAudioContext.idl
diff --git a/third_party/WebKit/Source/modules/webaudio/BaseAudioContext.idl b/third_party/WebKit/Source/modules/webaudio/BaseAudioContext.idl
index 274ea99c335be7167422a0e2fa788cd30eb5e31a..3d3345ceeeb989cac74b5eb6031d3573486fb040 100644
--- a/third_party/WebKit/Source/modules/webaudio/BaseAudioContext.idl
+++ b/third_party/WebKit/Source/modules/webaudio/BaseAudioContext.idl
@@ -28,6 +28,9 @@ enum AudioContextState {
     // Current state of the AudioContext
     readonly attribute AudioContextState state;
 
+    // Number of seconds of processing latency incurred by the AudioContext passing the audio from the AudioDestinationNode to the audio subsystem

[Raymond Toy, 2016/11/30 21:50:27]

I think this is a spec issue (for which I've filed a bug).  baseLatency doesn't
make sense for an OfflineAudioContext so it shouldn't be in the
BaseAudioContext.

[Andrew MacPherson, 2016/12/01 12:11:56]

Done, I've moved this to the AudioContext now.

+    readonly attribute double baseLatency;
+
     [RaisesException] AudioBuffer createBuffer(unsigned long numberOfChannels, unsigned long numberOfFrames, float sampleRate);
 
     // Asynchronous audio file data decoding.