ppapi_proxy: Support loading and reading urls. Proxy URLLoader....

src/shared/ppapi_proxy/plugin_ppb_url_loader.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_URL_LOADER_H_
 #define NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_PLUGIN_URL_LOADER_H_
 
 #include "native_client/src/include/nacl_macros.h"
 #include "ppapi/c/ppb_url_loader.h"
 
 namespace ppapi_proxy {
 
-// Implements the plugin (i.e., .nexe) side of the PPB_URLLoader interface.
+// Implements the untrusted side of the PPB_URLLoader interface.
 class PluginURLLoader {
  public:
   static const PPB_URLLoader* GetInterface();
 
  private:
   NACL_DISALLOW_COPY_AND_ASSIGN(PluginURLLoader);
 };
 
 }  // namespace ppapi_proxy
 
 #endif  // NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_PLUGIN_URL_LOADER_H_