Refactoring to make adding ink drop animations easier

ui/views/animation/test/test_ink_drop_host.cc

Index: ui/views/animation/test/test_ink_drop_host.cc
diff --git a/ui/views/animation/test/test_ink_drop_host.cc b/ui/views/animation/test/test_ink_drop_host.cc
index 4a30ff65759036c6f51a617f2abd0732326321d1..b853820c1ac3cb42784b33db98609261f420c842 100644
--- a/ui/views/animation/test/test_ink_drop_host.cc
+++ b/ui/views/animation/test/test_ink_drop_host.cc
@@ -14,4 +14,8 @@ void TestInkDropHost::AddInkDropLayer(ui::Layer* ink_drop_layer) {}
 
 void TestInkDropHost::RemoveInkDropLayer(ui::Layer* ink_drop_layer) {}
 
+gfx::Point TestInkDropHost::CalculateInkDropCenter() const {
+  return gfx::Point();
+}
+
 }  // namespace views