Keep top controls visible if SHOW is called right after HIDE.

cc/input/top_controls_manager.cc

Index: cc/input/top_controls_manager.cc
diff --git a/cc/input/top_controls_manager.cc b/cc/input/top_controls_manager.cc
index 9e3d9b1f1fb6948767ecaf8fcc79d37d655e83e6..90ebdc661cd6db273710ac6a0afd8bd175fdd6f1 100644
--- a/cc/input/top_controls_manager.cc
+++ b/cc/input/top_controls_manager.cc
@@ -96,8 +96,10 @@ void TopControlsManager::UpdateTopControlsState(TopControlsState constraints,
   float final_shown_ratio = 1.f;
   if (constraints == HIDDEN || current == HIDDEN)
     final_shown_ratio = 0.f;
-  if (final_shown_ratio == TopControlsShownRatio())
+  if (final_shown_ratio == TopControlsShownRatio()) {
+    ResetAnimations();
     return;
+  }
 
   if (animate) {
     SetupAnimation(final_shown_ratio ? SHOWING_CONTROLS : HIDING_CONTROLS);