Convert the async device ID getter to a chrome resource host

content/renderer/pepper/pepper_plugin_delegate_impl.cc

Index: content/renderer/pepper/pepper_plugin_delegate_impl.cc
diff --git a/content/renderer/pepper/pepper_plugin_delegate_impl.cc b/content/renderer/pepper/pepper_plugin_delegate_impl.cc
index d36c8f41eb75686ca21f4fe1bb642a0d0443f5c9..6b8c08ee62c5ea5c3d3855802d511b0e146ff245 100644
--- a/content/renderer/pepper/pepper_plugin_delegate_impl.cc
+++ b/content/renderer/pepper/pepper_plugin_delegate_impl.cc
@@ -107,8 +107,11 @@ class HostDispatcherWrapper
  public:
   HostDispatcherWrapper(RenderViewImpl* rv,
                         webkit::ppapi::PluginModule* module,
+                        int plugin_child_id,
                         const ppapi::PpapiPermissions& perms)
-      : module_(module),
+      : render_view_(rv),
+        module_(module),
+        plugin_child_id_(plugin_child_id),
         permissions_(perms) {
   }
   virtual ~HostDispatcherWrapper() {}
@@ -150,16 +153,32 @@ class HostDispatcherWrapper
   }
   virtual void AddInstance(PP_Instance instance) {
     ppapi::proxy::HostDispatcher::SetForInstance(instance, dispatcher_.get());
+
+    render_view_->Send(new ViewHostMsg_DidCreateOutOfProcessPepperInstance(
+        plugin_child_id_,
+        instance,
+        render_view_->routing_id()));
   }
   virtual void RemoveInstance(PP_Instance instance) {
     ppapi::proxy::HostDispatcher::RemoveForInstance(instance);
+
+    render_view_->Send(new ViewHostMsg_DidDeleteOutOfProcessPepperInstance(
+        plugin_child_id_,
+        instance));
   }
 
   ppapi::proxy::HostDispatcher* dispatcher() { return dispatcher_.get(); }
 
  private:
+  RenderViewImpl* render_view_;
+
   webkit::ppapi::PluginModule* module_;
 
+  // ID that the browser process uses to idetify the child process for the
+  // plugin. This isn't directly useful from our process (the renderer) except
+  // in messages to the browser to disambiguate plugins.
+  int plugin_child_id_;
+
   ppapi::PpapiPermissions permissions_;
 
   scoped_ptr<ppapi::proxy::HostDispatcher> dispatcher_;
@@ -361,7 +380,8 @@ PepperPluginDelegateImpl::CreatePepperPluginModule(
       permissions);
   PepperPluginRegistry::GetInstance()->AddLiveModule(path, module);
   scoped_ptr<HostDispatcherWrapper> dispatcher(
-      new HostDispatcherWrapper(render_view_, module, permissions));
+      new HostDispatcherWrapper(render_view_, module, plugin_child_id,
+                                permissions));
   if (!dispatcher->Init(
           channel_handle,
           webkit::ppapi::PluginModule::GetLocalGetInterfaceFunc(),
@@ -406,7 +426,7 @@ scoped_refptr<webkit::ppapi::PluginModule>
   RenderThreadImpl::current()->browser_plugin_registry()->AddModule(
       guest_process_id, module);
   scoped_ptr<HostDispatcherWrapper> dispatcher(
-      new HostDispatcherWrapper(render_view_, module, permissions));
+      new HostDispatcherWrapper(render_view_, module, 0, permissions));
   if (!dispatcher->Init(
           channel_handle,
           webkit::ppapi::PluginModule::GetLocalGetInterfaceFunc(),