Split "Online" and "Offline" AudioContext processing

Source/modules/webaudio/OnlineAudioContext.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef OnlineAudioContext_h
+#define OnlineAudioContext_h
+
+#include "bindings/core/v8/ScriptPromise.h"
+#include "bindings/core/v8/ScriptPromiseResolver.h"
+#include "modules/webaudio/AudioContext.h"
+#include "platform/heap/Handle.h"
+
+namespace blink {
+
+class Document;
+class ExceptionState;
+class ScriptState;
+
+// This is an AudioContext which actually plays sound, unlike an
+// OfflineAudioContext which renders sound into a buffer.
+class OnlineAudioContext : public AudioContext {

[Raymond Toy, 2015/06/27 15:38:11]

Would it be possible in this CL to rename AudioContext (orig) to
AbstractAudioContext and use AudioContext instead of OnlineAudioContext?

+public:
+    static AudioContext* create(Document&, ExceptionState&);
+
+    virtual ~OnlineAudioContext();
+    DECLARE_VIRTUAL_TRACE();
+
+    virtual ScriptPromise closeContext(ScriptState*) override final;
+    virtual bool isContextClosed() const override final;
+
+    virtual ScriptPromise suspendContext(ScriptState*) override final;
+    virtual ScriptPromise resumeContext(ScriptState*) override final;
+
+    virtual bool hasRealtimeConstraint() override final { return true; }
+
+protected:
+    OnlineAudioContext(Document&);
+
+    virtual void didClose() override final;
+
+private:
+    void stopRendering();
+
+    unsigned m_contextId;
+    RefPtrWillBeMember<ScriptPromiseResolver> m_closeResolver;
+};
+
+}
+
+#endif // OnlineAudioContext_h