Reland r107720 - Enable the new layer animation framework.

ui/aura_shell/shell.cc

Index: ui/aura_shell/shell.cc
diff --git a/ui/aura_shell/shell.cc b/ui/aura_shell/shell.cc
index aa2798dfdb732ad61c5f502417c5cb9810e0aaf0..a4c091f7bca3c133fde601761c12fa6cb58862d1 100644
--- a/ui/aura_shell/shell.cc
+++ b/ui/aura_shell/shell.cc
@@ -18,6 +18,7 @@
 #include "ui/aura_shell/shell_window_ids.h"
 #include "ui/base/view_prop.h"
 #include "ui/gfx/compositor/layer.h"
+#include "ui/gfx/compositor/layer_animator.h"
 #include "views/widget/native_widget_aura.h"
 #include "views/widget/widget.h"
 
@@ -209,8 +210,9 @@ void Shell::TileWindows() {
   for (size_t i = 0; i < bounds.size(); ++i) {
     to_restore_.push_back(
         std::make_pair(bounds[i].first, bounds[i].first->bounds()));
-    bounds[i].first->layer()->SetAnimation(
-        aura::Window::CreateDefaultAnimation());
+    ui::LayerAnimator::TransientSettings settings(
+        bounds[i].first->layer()->GetAnimator());
+    aura::Window::ApplyDefaultAnimationSettings(&settings);
     bounds[i].first->SetBounds(bounds[i].second);
     bounds[i].first->layer()->SetTransform(transform);
     bounds[i].first->layer()->SetOpacity(0.5f);
@@ -225,8 +227,9 @@ void Shell::TileWindows() {
 void Shell::RestoreTiledWindows() {
   ui::Transform identity_transform;
   for (size_t i = 0; i < to_restore_.size(); ++i) {
-    to_restore_[i].first->layer()->SetAnimation(
-        aura::Window::CreateDefaultAnimation());
+    ui::LayerAnimator::TransientSettings settings(
+        to_restore_[i].first->layer()->GetAnimator());
+    aura::Window::ApplyDefaultAnimationSettings(&settings);
     to_restore_[i].first->SetBounds(to_restore_[i].second);
     to_restore_[i].first->layer()->SetTransform(identity_transform);
     to_restore_[i].first->layer()->SetOpacity(1.0f);