Implement Mojo message codec in JavaScript

gin/modules/module_registry.cc

 // Copyright 2013 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.
 
 #include "gin/modules/module_registry.h"
 
 #include <string>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 78 matching lines @@
 
 Handle<String> GetHiddenValueKey(Isolate* isolate) {
   return StringToSymbol(isolate, "::gin::ModuleRegistry");
 }
 
 std::string GetImplicitModuleName(const std::string& explicit_name) {
   if (!explicit_name.empty())
     return explicit_name;
   std::string implicit_name;
   Handle<StackTrace> trace = StackTrace::CurrentStackTrace(1);
+  if (!trace->GetFrameCount())
+    return implicit_name;
   Handle<String> script_name = trace->GetFrame(0)->GetScriptName();
   if (!script_name.IsEmpty())
     ConvertFromV8(script_name, &implicit_name);
   return implicit_name;
 }
 
 }  // namespace
 
 ModuleRegistry::ModuleRegistry(Isolate* isolate)
     : modules_(isolate, Object::New()) {
@@ skipping 111 matching lines @@
     for (size_t i = 0; i < pending_modules.size(); ++i) {
       scoped_ptr<PendingModule> pending(pending_modules[i]);
       pending_modules[i] = NULL;
       if (AttemptToLoad(isolate, pending.Pass()))
         keep_trying = true;
     }
   }
 }
 
 }  // namespace gin