Enabled tests to control material design ink drop animations.

ui/views/animation/test/test_ink_drop_host.h

Index: ui/views/animation/test/test_ink_drop_host.h
diff --git a/ui/views/animation/test/test_ink_drop_host.h b/ui/views/animation/test/test_ink_drop_host.h
index 5bf8650e3a4c1cf81f267f96ab65f5fac23aa024..7bb18e1a17af9ae3386618a7a54d38ce3f677ea5 100644
--- a/ui/views/animation/test/test_ink_drop_host.h
+++ b/ui/views/animation/test/test_ink_drop_host.h
@@ -23,6 +23,10 @@ class TestInkDropHost : public InkDropHost {
     should_show_hover_ = should_show_hover;
   }
 
+  void set_disable_timers_for_test(bool disable_timers_for_test) {
+    disable_timers_for_test_ = disable_timers_for_test;
+  }
+
   // TestInkDropHost:
   void AddInkDropLayer(ui::Layer* ink_drop_layer) override;
   void RemoveInkDropLayer(ui::Layer* ink_drop_layer) override;
@@ -34,6 +38,10 @@ class TestInkDropHost : public InkDropHost {
 
   bool should_show_hover_;
 
+  // When true, the InkDropAnimation/InkDropHover instances will have their
+  // timers disabled after creation.
+  bool disable_timers_for_test_;
+
   DISALLOW_COPY_AND_ASSIGN(TestInkDropHost);
 };