[WIP] Provided file system from NACL.

chrome/browser/chromeos/file_system_provider/operations/operation.h

Index: chrome/browser/chromeos/file_system_provider/operations/operation.h
diff --git a/chrome/browser/chromeos/file_system_provider/operations/operation.h b/chrome/browser/chromeos/file_system_provider/operations/operation.h
index 3d9cfcd70bb645a02de11290d3682e838c89858b..31ff5caf904385509845224698067f995a99f7a3 100644
--- a/chrome/browser/chromeos/file_system_provider/operations/operation.h
+++ b/chrome/browser/chromeos/file_system_provider/operations/operation.h
@@ -19,7 +19,6 @@ class ListValue;
 
 namespace extensions {
 struct Event;
-class EventRouter;
 }  // namespace extensions
 
 namespace chromeos {
@@ -27,12 +26,15 @@ namespace file_system_provider {
 namespace operations {
 
 // Base class for operation bridges between fileapi and providing extensions.
-class Operation : public RequestManager::HandlerInterface {
+template <int source>
+class Operation : public RequestManager::HandlerInterface,
+                  public Source_Traits<source> {
  public:
+  typedef typename Source_Traits<source>::EventRouterType EventRouterType;
   typedef base::Callback<bool(scoped_ptr<extensions::Event> event)>
       DispatchEventImplCallback;
 
-  Operation(extensions::EventRouter* event_router,
+  Operation(typename Operation<source>::EventRouterType* event_router,
             const ProvidedFileSystemInfo& file_system_info);
   ~Operation() override;