extensions/renderer/blob_native_handler.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef EXTENSIONS_RENDERER_BLOB_NATIVE_HANDLER_H_
   6 #define EXTENSIONS_RENDERER_BLOB_NATIVE_HANDLER_H_
   7
   8 #include "extensions/renderer/object_backed_native_handler.h"
   9
  10 namespace extensions {
  11 class ScriptContext;
  12
  13 // This native handler is used to extract Blobs' UUIDs and pass them over to the
  14 // browser process extension implementation via argument modification. This is
  15 // necessary to support extension functions that take Blob parameters, as Blobs
  16 // are not serialized and sent over to the browser process in the normal way.
  17 //
  18 // Blobs sent via this method don't have their ref-counts incremented, so the
  19 // app using this technique must be sure to keep a reference.
  20 class BlobNativeHandler : public ObjectBackedNativeHandler {
  21  public:
  22   explicit BlobNativeHandler(ScriptContext* context);
  23
  24  private:
  25   void TakeBrowserProcessBlob(const v8::FunctionCallbackInfo<v8::Value>& args);
  26 };
  27
  28 }  // namespace extensions
  29
  30 #endif  // EXTENSIONS_RENDERER_BLOB_NATIVE_HANDLER_H_