[fsp] Use auto generated methods for generating dictionaries.

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 711dba48b91bdc92267c7e6df8dd00fd4e605d54..205b9d4ff565d41437c95a565c2b4335a128d348 100644
--- a/chrome/browser/chromeos/file_system_provider/operations/operation.h
+++ b/chrome/browser/chromeos/file_system_provider/operations/operation.h
@@ -14,7 +14,7 @@
 #include "storage/browser/fileapi/async_file_util.h"
 
 namespace base {
-class DictionaryValue;
+class ListValue;
 }  // namespace base
 
 namespace extensions {
@@ -50,12 +50,11 @@ class Operation : public RequestManager::HandlerInterface {
       const DispatchEventImplCallback& callback);
 
  protected:
-  // Sends an event to the providing extension. Automatically adds the file
-  // system id and the request id fields. Returns false, if the providing
+  // Sends an event to the providing extension. Returns false, if the providing
   // extension does not handle the |event_name| event.
   bool SendEvent(int request_id,
                  const std::string& event_name,
-                 scoped_ptr<base::DictionaryValue> options);
+                 scoped_ptr<base::ListValue> event_args);
 
   ProvidedFileSystemInfo file_system_info_;