Use CORS for fetching NaCl resources from extensions.

ppapi/native_client/src/trusted/plugin/service_runtime.cc

 /*
  * Copyright (c) 2012 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.
  */
 
 #define NACL_LOG_MODULE_NAME "Plugin::ServiceRuntime"
 
 #include "native_client/src/trusted/plugin/service_runtime.h"
 
@@ skipping 235 matching lines @@
 void PluginReverseInterface::OpenManifestEntry_MainThreadContinuation(
     OpenManifestEntryResource* p,
     int32_t err) {
   OpenManifestEntryResource *open_cont;
   UNREFERENCED_PARAMETER(err);
   // CallOnMainThread continuations always called with err == PP_OK.
 
   NaClLog(4, "Entered OpenManifestEntry_MainThreadContinuation\n");
 
   std::string mapped_url;
-  bool permit_extension_url = false;
-  if (!manifest_->ResolveKey(p->url, &mapped_url, &permit_extension_url,
+  if (!manifest_->ResolveKey(p->url, &mapped_url,
                              p->error_info, p->is_portable)) {
     NaClLog(4, "OpenManifestEntry_MainThreadContinuation: ResolveKey failed\n");
     // Failed, and error_info has the details on what happened.  Wake
     // up requesting thread -- we are done.
     nacl::MutexLocker take(&mu_);
     *p->op_complete_ptr = true;  // done...
     *p->out_desc = -1;       // but failed.
     NaClXCondVarBroadcast(&cv_);
     return;
   }
   NaClLog(4,
           "OpenManifestEntry_MainThreadContinuation: ResolveKey: %s -> %s\n",
           p->url.c_str(), mapped_url.c_str());
 
   open_cont = new OpenManifestEntryResource(*p);  // copy ctor!
   CHECK(open_cont != NULL);
   open_cont->url = mapped_url;
   pp::CompletionCallback stream_cc = WeakRefNewCallback(
       anchor_,
       this,
       &PluginReverseInterface::StreamAsFile_MainThreadContinuation,
       open_cont);
   if (!plugin_->StreamAsFile(mapped_url,
-                             permit_extension_url,
                              stream_cc.pp_completion_callback())) {
     NaClLog(4,
             "OpenManifestEntry_MainThreadContinuation: StreamAsFile failed\n");
     nacl::MutexLocker take(&mu_);
     *p->op_complete_ptr = true;  // done...
     *p->out_desc = -1;       // but failed.
     p->error_info->SetReport(ERROR_MANIFEST_OPEN,
                              "ServiceRuntime: StreamAsFile failed");
     NaClXCondVarBroadcast(&cv_);
     return;
@@ skipping 332 matching lines @@
   nacl::MutexLocker take(&mu_);
   return exit_status_;
 }
 
 void ServiceRuntime::set_exit_status(int exit_status) {
   nacl::MutexLocker take(&mu_);
   exit_status_ = exit_status & 0xff;
 }
 
 }  // namespace plugin