Move animation code to new ui/base/animation directory....

ui/base/animation/linear_animation.h

Index: ui/base/animation/linear_animation.h
===================================================================
--- ui/base/animation/linear_animation.h	(revision 0)
+++ ui/base/animation/linear_animation.h	(working copy)
@@ -1,15 +1,16 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
-// Inspired by NSAnimation
 
-#ifndef APP_LINEAR_ANIMATION_H_
-#define APP_LINEAR_ANIMATION_H_
+#ifndef UI_BASE_ANIMATION_LINEAR_ANIMATION_H_
+#define UI_BASE_ANIMATION_LINEAR_ANIMATION_H_
 #pragma once
 
-#include "app/animation.h"
 #include "base/time.h"
+#include "ui/base/animation/animation.h"
 
+namespace ui {
+
 class AnimationDelegate;
 
 // Linear time bounded animation. As the animation progresses AnimateToState is
@@ -68,4 +69,6 @@
   DISALLOW_COPY_AND_ASSIGN(LinearAnimation);
 };
 
+}  // namespace ui
+
 #endif  // APP_LINEAR_ANIMATION_H_