Refactors animation to allow for cleaner subclassing. I'm doing this

views/controls/button/text_button.cc

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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.
 
 #include "views/controls/button/text_button.h"
 
 #include <algorithm>
 
 #include "app/throb_animation.h"
 #include "app/resource_bundle.h"
 #include "gfx/canvas.h"
@@ skipping 222 matching lines @@
 }
 
 void TextButton::SetShowHighlighted(bool show_highlighted) {
   show_highlighted_ = show_highlighted;
 }
 
 void TextButton::Paint(gfx::Canvas* canvas, bool for_drag) {
   if (!for_drag) {
     PaintBackground(canvas);
 
-    if (show_highlighted_ && hover_animation_->IsAnimating()) {
+    if (show_highlighted_ && hover_animation_->is_animating()) {
       // Draw the hover bitmap into an offscreen buffer, then blend it
       // back into the current canvas.
       canvas->saveLayerAlpha(NULL,
           static_cast<int>(hover_animation_->GetCurrentValue() * 255),
           SkCanvas::kARGB_NoClipLayer_SaveFlag);
       canvas->drawARGB(0, 255, 255, 255, SkXfermode::kClear_Mode);
       PaintBorder(canvas);
       canvas->restore();
     } else if ((show_highlighted_ &&
                 (state_ == BS_HOT || state_ == BS_PUSHED)) ||
@@ skipping 144 matching lines @@
 bool TextButton::OnMousePressed(const MouseEvent& e) {
   RequestFocus();
   return true;
 }
 
 void TextButton::Paint(gfx::Canvas* canvas) {
   Paint(canvas, false);
 }
 
 }  // namespace views