Cloning a bunch of stuff from the native_client repository at r6528

ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_image_data.h

+// Copyright 2010 The Native Client 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 NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_PLUGIN_IMAGE_DATA_H_
+#define NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_PLUGIN_IMAGE_DATA_H_
+
+#include "native_client/src/include/nacl_macros.h"
+#include "native_client/src/shared/ppapi_proxy/plugin_resource.h"
+#include "ppapi/c/ppb_image_data.h"
+
+namespace ppapi_proxy {
+
+// Implements the untrusted side of the PPB_ImageData interface.
+class PluginImageData : public PluginResource {
+ public:
+  PluginImageData();
+  static const PPB_ImageData* GetInterface();
+
+  bool InitFromBrowserResource(PP_Resource resource);
+  void* Map();
+  void Unmap();
+
+  const PP_ImageDataDesc& desc() const { return desc_; }
+ private:
+  IMPLEMENT_RESOURCE(PluginImageData);
+  NACL_DISALLOW_COPY_AND_ASSIGN(PluginImageData);
+  PP_ImageDataDesc desc_;
+  int shm_fd_;
+  int32_t shm_size_;
+  void* addr_;
+};
+
+}  // namespace ppapi_proxy
+
+#endif  // NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_PLUGIN_IMAGE_DATA_H_