Pepper: Stop using SRPC for irt_open_resource().

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 "ppapi/native_client/src/trusted/plugin/service_runtime.h"
 
@@ skipping 87 matching lines @@
             "PluginReverseInterface::StartupInitializationComplete:"
             " init_done_cb_ not valid, skipping.\n");
   }
 }
 
 // TODO(bsy): OpenManifestEntry should use the manifest to ResolveKey
 // and invoke StreamAsFile with a completion callback that invokes
 // GetPOSIXFileDesc.
 bool PluginReverseInterface::OpenManifestEntry(nacl::string url_key,
                                                struct NaClFileInfo* info) {
+  // This method should only ever be called from the PNaCl translator, as the
+  // IRT is not available there.
+  // TODO(teravest): Remove support for OpenManifestEntry here once
+  // crbug.com/302078 is resolved.
+  if (service_runtime_->main_service_runtime()) {
+    NaClLog(LOG_ERROR,
+            "OpenManifestEntry should only be used by PNaCl translator.\n");
+    return false;
+  }
+
   bool op_complete = false;  // NB: mu_ and cv_ also controls access to this!
   // The to_open object is owned by the weak ref callback. Because this function
   // waits for the callback to finish, the to_open object will be deallocated on
   // the main thread before this function can return. The pointers it contains
   // to stack variables will not leak.
   OpenManifestEntryResource* to_open =
       new OpenManifestEntryResource(url_key, info, &op_complete);
   CHECK(to_open != NULL);
   NaClLog(4, "PluginReverseInterface::OpenManifestEntry: %s\n",
           url_key.c_str());
@@ skipping 441 matching lines @@
     reverse_service_->Unref();
 
   rev_interface_->Unref();
 
   anchor_->Unref();
   NaClCondVarDtor(&cond_);
   NaClMutexDtor(&mu_);
 }
 
 }  // namespace plugin