Check NaCl debug mask (not just flag) before choosing PNaCl debug URL.

components/nacl/renderer/ppb_nacl_private_impl.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 "components/nacl/renderer/ppb_nacl_private_impl.h"
 
 #include "base/command_line.h"
 #include "base/containers/scoped_ptr_hash_map.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
@@ skipping 449 matching lines @@
   DLOG_IF(ERROR, map.count(instance) != 0) << "Instance count should be 0";
   map.add(instance, new_load_manager.Pass());
 }
 
 void InstanceDestroyed(PP_Instance instance) {
   NexeLoadManagerMap& map = g_load_manager_map.Get();
   DLOG_IF(ERROR, map.count(instance) == 0) << "Could not find instance ID";
   map.erase(instance);
 }
 
-PP_Bool NaClDebugStubEnabled() {
-  return PP_FromBool(CommandLine::ForCurrentProcess()->HasSwitch(
-                         switches::kEnableNaClDebug));
+PP_Bool NaClDebugEnabledForURL(const char* alleged_nmf_url) {
+  if (!CommandLine::ForCurrentProcess()->HasSwitch(switches::kEnableNaClDebug))
+    return PP_FALSE;
+  bool should_debug;
+  IPC::Sender* sender = content::RenderThread::Get();
+  DCHECK(sender);
+  if(!sender->Send(new NaClHostMsg_NaClDebugEnabledForURL(
+         GURL(alleged_nmf_url),
+         &should_debug))) {
+    return PP_FALSE;
+  }
+  return PP_FromBool(should_debug);
 }
 
 const char* GetSandboxArch() {
   return nacl::GetSandboxArch();
 }
 
 PP_UrlSchemeType GetUrlScheme(PP_Var url) {
   scoped_refptr<ppapi::StringVar> url_string = ppapi::StringVar::FromPPVar(url);
   if (!url_string)
     return PP_SCHEME_OTHER;
@@ skipping 70 matching lines @@
   &GetNumberOfProcessors,
   &IsNonSFIModeEnabled,
   &GetNexeFd,
   &ReportTranslationFinished,
   &OpenNaClExecutable,
   &DispatchEvent,
   &SetReadOnlyProperty,
   &ReportLoadError,
   &InstanceCreated,
   &InstanceDestroyed,
-  &NaClDebugStubEnabled,
+  &NaClDebugEnabledForURL,
   &GetSandboxArch,
   &GetUrlScheme,
   &LogToConsole,
   &GetNexeErrorReported,
   &SetNexeErrorReported,
   &GetNaClReadyState,
   &SetNaClReadyState,
   &GetIsInstalled,
   &SetIsInstalled
 };
 
 }  // namespace
 
 namespace nacl {
 
 const PPB_NaCl_Private* GetNaClPrivateInterface() {
   return &nacl_interface;
 }
 
 }  // namespace nacl