MacViews: Put wm window animation calls behind an interface.

ui/views/widget/window_visibility_animation_aura.cc

+// Copyright 2014 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/widget/window_visibility_animation_aura.h"
+
+#include "ui/wm/core/window_animations.h"
+
+namespace views {
+
+WindowVisibilityAnimationAura::WindowVisibilityAnimationAura(
+    aura::Window* window)
+    : window_(window) {
+  DCHECK(window);
+}
+
+WindowVisibilityAnimationAura::~WindowVisibilityAnimationAura() {
+}
+
+void WindowVisibilityAnimationAura::SetDuration(
+    const base::TimeDelta& duration) {
+  wm::SetWindowVisibilityAnimationDuration(window_, duration);
+}
+
+void WindowVisibilityAnimationAura::SetTransition(Transition transition) {
+  wm::WindowVisibilityAnimationTransition wm_transition;
+  switch (transition) {
+    case ANIMATE_SHOW:
+      wm_transition = wm::ANIMATE_SHOW;
+    case ANIMATE_HIDE:
+      wm_transition = wm::ANIMATE_HIDE;
+    case ANIMATE_BOTH:
+      wm_transition = wm::ANIMATE_BOTH;
+    case ANIMATE_NONE:
+      wm_transition = wm::ANIMATE_NONE;
+  }
+  wm::SetWindowVisibilityAnimationTransition(window_, wm_transition);
+}
+
+}  // namespace views