Revert "Fix a ton of compiler warnings."

app/animation.h

Index: app/animation.h
diff --git a/app/animation.h b/app/animation.h
index c37adde0fdb72f1e5ae861b9ff725f9a597d28b6..811c038772959de816bd9b65f8924e9335f9865a 100644
--- a/app/animation.h
+++ b/app/animation.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2006-2008 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
@@ -32,9 +32,6 @@ class AnimationDelegate {
   // Called when an animation has been canceled.
   virtual void AnimationCanceled(const Animation* animation) {
   }
-
- protected:
-  ~AnimationDelegate() {}
 };
 
 // Animation