ash: Remove old lock animation implementation.

ash/ash.gyp

Index: ash/ash.gyp
diff --git a/ash/ash.gyp b/ash/ash.gyp
index 33be172fb6dbf8e4f50d117d5ce808777d31ea69..ae1e6fafc8eb2d390174930f7c8ee7e889064350 100644
--- a/ash/ash.gyp
+++ b/ash/ash.gyp
@@ -440,8 +440,6 @@
         'wm/image_cursors.h',
         'wm/lock_state_controller.cc',
         'wm/lock_state_controller.h',
-        'wm/lock_state_controller_impl2.cc',
-        'wm/lock_state_controller_impl2.h',
         'wm/lock_state_observer.h',
         'wm/mru_window_tracker.cc',
         'wm/mru_window_tracker.h',
@@ -484,8 +482,6 @@
         'wm/screen_dimmer.h',
         'wm/session_state_animator.cc',
         'wm/session_state_animator.h',
-        'wm/session_state_controller_impl.cc',
-        'wm/session_state_controller_impl.h',
         'wm/stacking_controller.cc',
         'wm/stacking_controller.h',
         'wm/status_area_layout_manager.cc',
@@ -767,13 +763,12 @@
         'wm/dock/docked_window_resizer_unittest.cc',
         'wm/drag_window_resizer_unittest.cc',
         'wm/frame_painter_unittest.cc',
-        'wm/lock_state_controller_impl2_unittest.cc',
+        'wm/lock_state_controller_unittest.cc',
         'wm/mru_window_tracker_unittest.cc',
         'wm/overview/window_selector_unittest.cc',
         'wm/panels/panel_layout_manager_unittest.cc',
         'wm/panels/panel_window_resizer_unittest.cc',
         'wm/partial_screenshot_view_unittest.cc',
-        'wm/power_button_controller_unittest.cc',
         'wm/screen_dimmer_unittest.cc',
         'wm/stacking_controller_unittest.cc',
         'wm/sticky_keys_unittest.cc',