Tweaks to PPB_VarArrayBuffer in preperation for taking out of Dev.

ppapi/shared_impl/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_SHARED_IMPL_VAR_H_
 #define PPAPI_SHARED_IMPL_VAR_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 122 matching lines @@
 //   ArrayBufferVar* array = ArrayBufferVar::FromPPVar(var);
 //   if (!array)
 //     return false;  // Not an ArrayBuffer or an invalid var.
 //   DoSomethingWithTheBuffer(array);
 class PPAPI_SHARED_EXPORT ArrayBufferVar : public Var {
  public:
   ArrayBufferVar();
   virtual ~ArrayBufferVar();
 
   virtual void* Map() = 0;
+  virtual void Unmap() = 0;
   virtual uint32 ByteLength() = 0;
 
   // Var override.
   virtual ArrayBufferVar* AsArrayBufferVar() OVERRIDE;
   virtual PP_VarType GetType() const OVERRIDE;
 
   // Helper function that converts a PP_Var to an ArrayBufferVar. This will
   // return NULL if the PP_Var is not of ArrayBuffer type.
   static ArrayBufferVar* FromPPVar(PP_Var var);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ArrayBufferVar);
 };
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_VAR_H_