make menus, bubbles, etc. top level windows on aura

Makes these windows top-level so they interact with the system better (and also maintain focus better in some cases)

Two additional delegations:
- One to notify when the animation is complete because when closing a window the root window close needs to be deferred until after the animation is complete.
- One to add extra space to the root window used during animations.

R=sky@chromium.org
BUG=175016,175833,179786,180071,181175

Review URL: https://chromiumcodereview.appspot.com/12342028

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@190446 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 32 insertions, 0 deletions

diff --git a/ui/aura/client/animation_host.cc b/ui/aura/client/animation_host.cc
new file mode 100644
index 0000000..5df22ba
--- /dev/null
+++ b/ui/aura/client/animation_host.cc
@@ -0,0 +1,32 @@
+// Copyright 2013 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/aura/client/animation_host.h"
+
+#include "base/compiler_specific.h"
+#include "ui/aura/aura_export.h"
+
+#include "ui/aura/env.h"
+#include "ui/aura/root_window.h"
+#include "ui/aura/window_property.h"
+
+DECLARE_WINDOW_PROPERTY_TYPE(aura::client::AnimationHost*)
+
+namespace aura {
+namespace client {
+
+DEFINE_WINDOW_PROPERTY_KEY(AnimationHost*, kRootWindowAnimationHostKey, NULL);
+
+void SetAnimationHost(Window* window, AnimationHost* animation_host) {
+  DCHECK(window);
+  window->SetProperty(kRootWindowAnimationHostKey, animation_host);
+}
+
+AnimationHost* GetAnimationHost(Window* window) {
+  DCHECK(window);
+  return window->GetProperty(kRootWindowAnimationHostKey);
+}
+
+}  // namespace client
+}  // namespace aura