Support for AudioContextOptions latencyHint.

components/test_runner/web_test_interfaces.cc

Index: components/test_runner/web_test_interfaces.cc
diff --git a/components/test_runner/web_test_interfaces.cc b/components/test_runner/web_test_interfaces.cc
index c320100ebc5733069130e8bfb2f4955a950a49ac..d7251ff3b95475a0563cd46c814e6aeeb6435f30 100644
--- a/components/test_runner/web_test_interfaces.cc
+++ b/components/test_runner/web_test_interfaces.cc
@@ -78,8 +78,9 @@ WebMIDIAccessor* WebTestInterfaces::CreateMIDIAccessor(
   return new MockWebMIDIAccessor(client, interfaces_.get());
 }
 
-WebAudioDevice* WebTestInterfaces::CreateAudioDevice(double sample_rate) {
-  return new MockWebAudioDevice(sample_rate);
+WebAudioDevice* WebTestInterfaces::CreateAudioDevice(double sample_rate,
+                                                     int frames_per_buffer) {
+  return new MockWebAudioDevice(sample_rate, frames_per_buffer);
 }
 
 std::unique_ptr<WebFrameTestClient> WebTestInterfaces::CreateWebFrameTestClient(