Add new animations in second implementation.

ash/wm/session_state_animator.h

Index: ash/wm/session_state_animator.h
diff --git a/ash/wm/session_state_animator.h b/ash/wm/session_state_animator.h
index 43f2f1462b813278cf724198d75d003fd27b7d7e..37bc3b35e83dd3d5d4bee3edebfffd7ded3523d7 100644
--- a/ash/wm/session_state_animator.h
+++ b/ash/wm/session_state_animator.h
@@ -6,6 +6,7 @@
 #define ASH_WM_SESSION_STATE_ANIMATOR_H_
 
 #include "ash/ash_export.h"
+#include "ash/wm/workspace/colored_window_controller.h"
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/timer.h"
@@ -36,6 +37,11 @@ class ASH_EXPORT SessionStateAnimator : public aura::RootWindowObserver {
     ANIMATION_FADE_IN,
     ANIMATION_HIDE,
     ANIMATION_RESTORE,
+    ANIMATION_RAISE,
+    ANIMATION_LOWER,
+    ANIMATION_PARTIAL_FADE_IN,
+    ANIMATION_UNDO_PARTIAL_FADE_IN,
+    ANIMATION_FULL_FADE_IN,
   };
 
   // Specific containers or groups of containers that can be animated.
@@ -59,6 +65,8 @@ class ASH_EXPORT SessionStateAnimator : public aura::RootWindowObserver {
     // Multiple system layers belong here like status, menu, tooltip
     // and overlay layers.
     LOCK_SCREEN_RELATED_CONTAINERS = 1 << 5,
+
+    LOCK_SCREEN_SYSTEM_FOREGROUND = 1 << 6,
   };
 
   // Helper class used by tests to access internal state.
@@ -106,6 +114,9 @@ class ASH_EXPORT SessionStateAnimator : public aura::RootWindowObserver {
   void ShowBlackLayer();
   void DropBlackLayer();
 
+  void CreateForeground();

[Daniel Erat, 2012/10/23 16:02:11]

nit: rename this to ShowForeground() to match ShowBlackLayer

also, please add a comment similar to the one that the *DropLayer() methods have

[Denis Kuznetsov (DE-MUC), 2012/10/23 16:07:30]

I wanted to indicate that calling this method does not result in Foreground
being displayed. It actually creates foreground, but explicitly sets 0 opacity
to layer that contains it.

[Daniel Erat, 2012/10/23 16:13:03]

Sounds reasonable.  Please document this in a comment, then:

"Create |foreground_| layer if it doesn't already exist, but makes it completely
transparent."

+  void DropForeground();
+
   // Drops back layer after |UNDO_SLOW_CLOSE| animation delay.
   void ScheduleDropBlackLayer();
 
@@ -129,6 +140,10 @@ class ASH_EXPORT SessionStateAnimator : public aura::RootWindowObserver {
   // http://crbug.com/113445
   scoped_ptr<ui::Layer> black_layer_;
 
+  // White foreground that is used during shutdown animation to "fade
+  // everything into white".
+  scoped_ptr<ColoredWindowController> foreground_;
+
   // Started when we abort the pre-lock state.  When it fires, we hide
   // |black_layer_|, as the desktop background is now covering the whole
   // screen.