CustomButton: restrict animation repaints to buttons that actually animate

ui/views/controls/button/custom_button.cc

 // Copyright (c) 2012 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 "ui/views/controls/button/custom_button.h"
 
 #include "ui/accessibility/ax_view_state.h"
 #include "ui/events/event.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/keycodes/keyboard_codes.h"
@@ skipping 347 matching lines @@
 }
 
 SkColor CustomButton::GetInkDropBaseColor() const {
   return ink_drop_base_color_;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // CustomButton, gfx::AnimationDelegate implementation:
 
 void CustomButton::AnimationProgressed(const gfx::Animation* animation) {
-  SchedulePaint();
+  if (animates_hover())
+    SchedulePaint();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // CustomButton, View overrides (public):
 
 void CustomButton::ViewHierarchyChanged(
     const ViewHierarchyChangedDetails& details) {
   if (!details.is_add && state_ != STATE_DISABLED)
     SetState(STATE_NORMAL);
 }
@@ skipping 92 matching lines @@
           views::InkDropState::ACTION_PENDING ||
       ink_drop()->GetTargetInkDropState() ==
           views::InkDropState::ALTERNATE_ACTION_PENDING) {
     AnimateInkDrop(views::InkDropState::HIDDEN,
                    ui::LocatedEvent::FromIfValid(&event));
   }
   Button::OnClickCanceled(event);
 }
 
 }  // namespace views