Revert of cancel overlay-scrollbar hover state when moving pointer out of window for ChromeOS

cc/input/scrollbar_animation_controller_thinning_unittest.cc

 // 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 "cc/input/scrollbar_animation_controller_thinning.h"
 
 #include "cc/layers/solid_color_scrollbar_layer_impl.h"
 #include "cc/test/fake_impl_task_runner_provider.h"
 #include "cc/test/fake_layer_tree_host_impl.h"
 #include "cc/test/geometry_test_utils.h"
@@ skipping 500 matching lines @@
   // stay thick and dark
   // test for 10 seconds, stay thick and dark
   for (int i = 0; i < 10; ++i) {
     time += base::TimeDelta::FromSeconds(1);
     scrollbar_controller_->Animate(time);
     EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->Opacity());
     EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->thumb_thickness_scale_factor());
   }
 }
 
-// Move mouse on scrollbar and capture then move out of window. Confirm that
-// the bar stays thick and dark.
-TEST_F(ScrollbarAnimationControllerThinningTest,
-       MouseCapturedAndExitWindowFromScrollbar) {
-  base::TimeTicks time;
-  time += base::TimeDelta::FromSeconds(1);
-
-  // Move in
-  scrollbar_controller_->DidMouseMoveNear(0);
-
-  scrollbar_controller_->Animate(time);
-  time += base::TimeDelta::FromSeconds(kDuration);
-  scrollbar_controller_->Animate(time);
-  EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->Opacity());
-  EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->thumb_thickness_scale_factor());
-
-  // Capture
-  scrollbar_controller_->DidCaptureScrollbarBegin();
-  time += base::TimeDelta::FromSeconds(1);
-  scrollbar_controller_->Animate(time);
-  EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->Opacity());
-  EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->thumb_thickness_scale_factor());
-
-  // move out of window
-  scrollbar_controller_->DidMouseMoveOffScrollbar();
-
-  // test for 10 seconds, stay thick and dark
-  for (int i = 0; i < 10; ++i) {
-    time += base::TimeDelta::FromSeconds(1);
-    scrollbar_controller_->Animate(time);
-    EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->Opacity());
-    EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->thumb_thickness_scale_factor());
-  }
-}
-
 }  // namespace
 }  // namespace cc