Remove unused DBusThreadManagerObserver

chromeos/dbus/fake_dbus_thread_manager.cc

Index: chromeos/dbus/fake_dbus_thread_manager.cc
diff --git a/chromeos/dbus/fake_dbus_thread_manager.cc b/chromeos/dbus/fake_dbus_thread_manager.cc
index 38e67e3d7b1a62dcaf88647a3d3636020478aaad..abf26e96ac6d6fc3b37aeead953d6ad7edbe7129 100644
--- a/chromeos/dbus/fake_dbus_thread_manager.cc
+++ b/chromeos/dbus/fake_dbus_thread_manager.cc
@@ -10,7 +10,6 @@
 #include "chromeos/dbus/cros_disks_client.h"
 #include "chromeos/dbus/dbus_client.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
-#include "chromeos/dbus/dbus_thread_manager_observer.h"
 #include "chromeos/dbus/fake_bluetooth_adapter_client.h"
 #include "chromeos/dbus/fake_bluetooth_agent_manager_client.h"
 #include "chromeos/dbus/fake_bluetooth_device_client.h"
@@ -52,8 +51,6 @@ FakeDBusThreadManager::FakeDBusThreadManager() {
 }
 
 FakeDBusThreadManager::~FakeDBusThreadManager() {
-  FOR_EACH_OBSERVER(DBusThreadManagerObserver, observers_,
-                    OnDBusThreadManagerDestroying(this));
 }
 
 void FakeDBusThreadManager::SetFakeClients() {
@@ -319,17 +316,6 @@ void FakeDBusThreadManager::SetUpdateEngineClient(
   update_engine_client_ = client.Pass();
 }
 
-void FakeDBusThreadManager::AddObserver(DBusThreadManagerObserver* observer) {
-  DCHECK(observer);
-  observers_.AddObserver(observer);
-}
-
-void FakeDBusThreadManager::RemoveObserver(
-    DBusThreadManagerObserver* observer) {
-  DCHECK(observer);
-  observers_.RemoveObserver(observer);
-}
-
 dbus::Bus* FakeDBusThreadManager::GetSystemBus() {
   return NULL;
 }