[ash-md] Remove the number of animators used for the Shelf animations.

ui/gfx/animation/slide_animation_unittest.cc

Index: ui/gfx/animation/slide_animation_unittest.cc
diff --git a/ui/gfx/animation/slide_animation_unittest.cc b/ui/gfx/animation/slide_animation_unittest.cc
index b22dab77ca9279481e3c72384f3833d9f3dcae00..121fa66b286dda80a41e3c430f2b7567af0d513e 100644
--- a/ui/gfx/animation/slide_animation_unittest.cc
+++ b/ui/gfx/animation/slide_animation_unittest.cc
@@ -41,7 +41,7 @@ class SlideAnimationTest: public testing::Test {
 
 // Tests animation construction.
 TEST_F(SlideAnimationTest, InitialState) {
-  SlideAnimation animation(NULL);
+  SlideAnimation animation(nullptr);
   // By default, slide animations are 60 Hz, so the timer interval should be
   // 1/60th of a second.
   EXPECT_EQ(1000 / 60, animation.timer_interval().InMilliseconds());
@@ -55,7 +55,7 @@ TEST_F(SlideAnimationTest, InitialState) {
 }
 
 TEST_F(SlideAnimationTest, Basics) {
-  SlideAnimation animation(NULL);
+  SlideAnimation animation(nullptr);
   SlideAnimation::TestApi test_api(&animation);
 
   // Use linear tweening to make the math easier below.
@@ -87,6 +87,22 @@ TEST_F(SlideAnimationTest, Basics) {
   EXPECT_FALSE(animation.IsClosing());
 }
 
+TEST_F(SlideAnimationTest, ShowAndHideImmediately) {
+  SlideAnimation animation(nullptr);
+  SlideAnimation::TestApi test_api(&animation);
+
+  EXPECT_NE(1.0, animation.GetCurrentValue());
+
+  animation.ShowImmediately();
+  EXPECT_FALSE(animation.is_animating());
+  EXPECT_TRUE(animation.IsShowing());
+  EXPECT_EQ(1.0, animation.GetCurrentValue());
+
+  animation.HideImmediately();
+  EXPECT_FALSE(animation.is_animating());
+  EXPECT_EQ(0.0, animation.GetCurrentValue());
+}
+
 // Tests that delegate is not notified when animation is running and is deleted.
 // (Such a scenario would cause problems for BoundsAnimator).
 TEST_F(SlideAnimationTest, DontNotifyOnDelete) {