Tweaks to PPB_VarArrayBuffer in preperation for taking out of Dev.

webkit/plugins/ppapi/host_array_buffer_var.h

 // Copyright (c) 2011 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 PPAPI_WEBKIT_PLUGINS_PPAPI_HOST_ARRAY_BUFFER_VAR_H_
 #define PPAPI_WEBKIT_PLUGINS_PPAPI_HOST_ARRAY_BUFFER_VAR_H_
 
 #include "ppapi/shared_impl/var.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebArrayBuffer.h"
 
 namespace webkit {
 namespace ppapi {
 
 // Represents a host-side ArrayBufferVar.
 class HostArrayBufferVar : public ::ppapi::ArrayBufferVar {
  public:
   explicit HostArrayBufferVar(uint32 size_in_bytes);
   explicit HostArrayBufferVar(const WebKit::WebArrayBuffer& buffer);
   virtual ~HostArrayBufferVar();
 
   // ArrayBufferVar implementation.
   virtual void* Map() OVERRIDE;
+  virtual void Unmap() OVERRIDE;
   virtual uint32 ByteLength() OVERRIDE;
 
   WebKit::WebArrayBuffer& webkit_buffer() { return buffer_; }
 
  private:
   WebKit::WebArrayBuffer buffer_;
 
   DISALLOW_COPY_AND_ASSIGN(HostArrayBufferVar);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // PPAPI_WEBKIT_PLUGINS_PPAPI_HOST_ARRAY_BUFFER_VAR_H_