[PPAPI] It is now possible to pass filesystems from JavaScript to NaCl modules.

content/renderer/pepper/host_var_tracker.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.
 
 #include "content/renderer/pepper/host_var_tracker.h"
 
 #include "base/logging.h"
 #include "content/renderer/pepper/host_array_buffer_var.h"
 #include "content/renderer/pepper/host_resource_var.h"
 #include "content/renderer/pepper/npobject_var.h"
@@ skipping 85 matching lines @@
 
 int HostVarTracker::GetLiveNPObjectVarsForInstance(PP_Instance instance) const {
   CheckThreadingPreconditions();
 
   InstanceMap::const_iterator found = instance_map_.find(instance);
   if (found == instance_map_.end())
     return 0;
   return static_cast<int>(found->second->size());
 }
 
+PP_Var HostVarTracker::MakeResourcePPVarFromMessage(
+    PP_Instance instance,
+    const IPC::Message& creation_message,
+    int pending_renderer_id,
+    int pending_browser_id) {
+  // On the host side, the creation message is ignored when creating a resource.
+  // Therefore, a call to this function indicates a null resource. Return the
+  // resource 0.
+  return MakeResourcePPVar(0);
+}
+
 ppapi::ResourceVar* HostVarTracker::MakeResourceVar(PP_Resource pp_resource) {
   return new HostResourceVar(pp_resource);
 }
 
 void HostVarTracker::DidDeleteInstance(PP_Instance instance) {
   CheckThreadingPreconditions();
 
   InstanceMap::iterator found_instance = instance_map_.find(instance);
   if (found_instance == instance_map_.end())
     return;  // Nothing to do.
@@ skipping 51 matching lines @@
   if (it->second.instance != instance)
     return false;
 
   *handle = it->second.handle;
   *size_in_bytes = it->second.size_in_bytes;
   shared_memory_map_.erase(it);
   return true;
 }
 
 }  // namespace content