Implement in-process PPB_VarArrayBuffer_Dev.

ppapi/proxy/plugin_array_buffer_var.cc

+// 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.
+
+#include "ppapi/proxy/plugin_array_buffer_var.h"
+
+#include <stdlib.h>
+
+#include <limits>
+
+namespace ppapi {
+
+PluginArrayBufferVar::PluginArrayBufferVar(uint32 size_in_bytes)
+    : buffer_(size_in_bytes) {
+}
+
+PluginArrayBufferVar::~PluginArrayBufferVar() {
+}
+
+void* PluginArrayBufferVar::Map() {
+  if (buffer_.empty())
+    return NULL;
+  return &(buffer_[0]);
+}
+
+uint32 PluginArrayBufferVar::ByteLength() {
+  return buffer_.size();
+}
+
+}  // namespace ppapi
+