Support for AudioContextOptions latencyHint.

third_party/WebKit/public/platform/Platform.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 54 matching lines @@
 namespace v8 {
 class Context;
 template <class T>
 class Local;
 }
 
 namespace blink {
 
 class InterfaceProvider;
 class WebAudioBus;
+class WebAudioLatencyHint;
 class WebBlobRegistry;
 class WebCanvasCaptureHandler;
 class WebClipboard;
 class WebCompositorSupport;
 class WebCookieJar;
 class WebCrypto;
 class WebDatabaseObserver;
 class WebPlatformEventListener;
 class WebFallbackThemeEngine;
 class WebFileSystem;
@@ skipping 83 matching lines @@
   }
 
   // Audio --------------------------------------------------------------
 
   virtual double audioHardwareSampleRate() { return 0; }
   virtual size_t audioHardwareBufferSize() { return 0; }
   virtual unsigned audioHardwareOutputChannels() { return 0; }
 
   // Creates a device for audio I/O.
   // Pass in (numberOfInputChannels > 0) if live/local audio input is desired.
-  virtual WebAudioDevice* createAudioDevice(size_t bufferSize,
-                                            unsigned numberOfInputChannels,
-                                            unsigned numberOfChannels,
-                                            double sampleRate,
-                                            WebAudioDevice::RenderCallback*,
-                                            const WebString& deviceId,
-                                            const WebSecurityOrigin&) {
+  virtual WebAudioDevice* createAudioDevice(
+      unsigned numberOfInputChannels,
+      unsigned numberOfChannels,
+      const WebAudioLatencyHint& latencyHint,
+      WebAudioDevice::RenderCallback*,
+      const WebString& deviceId,
+      const WebSecurityOrigin&) {
     return nullptr;
   }
 
   // MIDI ----------------------------------------------------------------
 
   // Creates a platform dependent WebMIDIAccessor. MIDIAccessor under platform
   // creates and owns it.
   virtual WebMIDIAccessor* createMIDIAccessor(WebMIDIAccessorClient*) {
     return nullptr;
   }
@@ skipping 480 matching lines @@
  protected:
   Platform();
   virtual ~Platform() {}
 
   WebThread* m_mainThread;
 };
 
 }  // namespace blink
 
 #endif