Revert of Changed api to notify when watched directory is deleted.

chrome/browser/chromeos/extensions/file_manager/event_router.h

Index: chrome/browser/chromeos/extensions/file_manager/event_router.h
diff --git a/chrome/browser/chromeos/extensions/file_manager/event_router.h b/chrome/browser/chromeos/extensions/file_manager/event_router.h
index 15be21b6735efa1ccf317c11eae1183c5795de20..205591e63b2ff078ceac6e07d013ced11872c04a 100644
--- a/chrome/browser/chromeos/extensions/file_manager/event_router.h
+++ b/chrome/browser/chromeos/extensions/file_manager/event_router.h
@@ -7,7 +7,6 @@
 
 #include <map>
 #include <string>
-#include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ -58,12 +57,6 @@
                     public VolumeManagerObserver,
                     public content::NotificationObserver {
  public:
-  typedef base::Callback<void(const base::FilePath& virtual_path,
-                              const drive::FileChange* list,
-                              bool got_error,
-                              const std::vector<std::string>& extension_ids)>
-      DispatchDirectoryChangeEventImplCallback;
-
   explicit EventRouter(Profile* profile);
   virtual ~EventRouter();
 
@@ -139,10 +132,6 @@
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) override;
 
-  // Set custom dispatch directory change event implementation for testing.
-  void SetDispatchDirectoryChangeEventImplForTesting(
-      const DispatchDirectoryChangeEventImplCallback& callback);
-
  private:
   typedef std::map<base::FilePath, FileWatcher*> WatcherMap;
 
@@ -159,13 +148,6 @@
 
   // Sends directory change event.
   void DispatchDirectoryChangeEvent(
-      const base::FilePath& path,
-      const drive::FileChange* list,
-      bool got_error,
-      const std::vector<std::string>& extension_ids);
-
-  // Default implementation of DispatchDirectoryChangeEvent.
-  void DispatchDirectoryChangeEventImpl(
       const base::FilePath& path,
       const drive::FileChange* list,
       bool got_error,
@@ -228,13 +210,9 @@
 
   scoped_ptr<DeviceEventRouter> device_event_router_;
 
-  DispatchDirectoryChangeEventImplCallback
-      dispatch_directory_change_event_impl_;
-
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate the weak pointers before any other members are destroyed.
   base::WeakPtrFactory<EventRouter> weak_factory_;
-
   DISALLOW_COPY_AND_ASSIGN(EventRouter);
 };