Add an IPC channel between the NaCl loader process and the renderer.

webkit/plugins/ppapi/plugin_module.cc

Index: webkit/plugins/ppapi/plugin_module.cc
===================================================================
--- webkit/plugins/ppapi/plugin_module.cc	(revision 143509)
+++ webkit/plugins/ppapi/plugin_module.cc	(working copy)
@@ -419,7 +419,8 @@
       library_(NULL),
       name_(name),
       path_(path),
-      reserve_instance_id_(NULL) {
+      reserve_instance_id_(NULL),
+      nacl_ipc_proxy_(false) {
   // Ensure the globals object is created.
   if (!host_globals)
     host_globals = new HostGlobals;
@@ -496,9 +497,13 @@
 }
 
 void PluginModule::InitAsProxiedNaCl(
-    PluginDelegate::OutOfProcessProxy* out_of_process_proxy,
+    scoped_ptr<PluginDelegate::OutOfProcessProxy> out_of_process_proxy,
     PP_Instance instance) {
-  InitAsProxied(out_of_process_proxy);
+  // TODO(bbudge) We need to switch the mode of the PluginModule on a
+  // per-instance basis. Fix this so out_of_process_proxy and other
+  // state is stored in a map, indexed by instance.
+  nacl_ipc_proxy_ = true;
+  InitAsProxied(out_of_process_proxy.release());
   // InitAsProxied (for the trusted/out-of-process case) initializes only the
   // module, and one or more instances are added later. In this case, the
   // PluginInstance was already created as in-process, so we missed the proxy
@@ -560,6 +565,11 @@
   if (out_of_process_proxy_.get())
     out_of_process_proxy_->RemoveInstance(instance->pp_instance());
   instances_.erase(instance);
+
+  if (nacl_ipc_proxy_) {
+    out_of_process_proxy_.reset();
+    reserve_instance_id_ = NULL;
+  }
 }
 
 scoped_refptr< ::ppapi::CallbackTracker> PluginModule::GetCallbackTracker() {