Fix crash when InkDropHostView::SetHasInkDrop() is called multiple times

ui/views/animation/test/ink_drop_host_view_test_api.h

Index: ui/views/animation/test/ink_drop_host_view_test_api.h
diff --git a/ui/views/animation/test/ink_drop_host_view_test_api.h b/ui/views/animation/test/ink_drop_host_view_test_api.h
index 2bbb820e84a689dd8f66c2f656354b7d90c9610d..9ec2f53bf5b9a92aa611f7c2799bfec332394275 100644
--- a/ui/views/animation/test/ink_drop_host_view_test_api.h
+++ b/ui/views/animation/test/ink_drop_host_view_test_api.h
@@ -21,9 +21,13 @@ class InkDropHostViewTestApi {
   explicit InkDropHostViewTestApi(InkDropHostView* host_view);
   ~InkDropHostViewTestApi();
 
+  void SetHasInkDrop(bool has_an_ink_drop);
+
   void SetInkDrop(std::unique_ptr<InkDrop> ink_drop);
   InkDrop* ink_drop() { return host_view_->ink_drop(); }
 
+  bool HasGestureHandler() const;
+
   // Wrapper for InkDropHostView::GetInkDropCenterBasedOnLastEvent().
   gfx::Point GetInkDropCenterBasedOnLastEvent() const;