Fixes ink drop being "stuck" on when losing focus.

ui/views/animation/test/test_ink_drop_delegate.cc

Index: ui/views/animation/test/test_ink_drop_delegate.cc
diff --git a/ui/views/animation/test/test_ink_drop_delegate.cc b/ui/views/animation/test/test_ink_drop_delegate.cc
index 9d20cf0fffc09e5f7b6a6cacb83efcdc4e1b4330..04d55a25d41ed320832d6c7626bec58b54b55f91 100644
--- a/ui/views/animation/test/test_ink_drop_delegate.cc
+++ b/ui/views/animation/test/test_ink_drop_delegate.cc
@@ -2,11 +2,35 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "ui/views/animation/ink_drop.h"
 #include "ui/views/animation/test/test_ink_drop_delegate.h"
 
 namespace views {
 namespace test {
 
+class TestInkDrop : public InkDrop {
+ public:
+  TestInkDrop() : InkDrop() {}
+  ~TestInkDrop() override {}
+
+  InkDropState GetTargetInkDropState() const override {
+    NOTREACHED();
+    return InkDropState::HIDDEN;
+  }
+
+  bool IsVisible() const override {
+    NOTREACHED();
+    return false;
+  }
+  void AnimateToState(InkDropState ink_drop_state) override { NOTREACHED(); }
+  void SnapToActivated() override { NOTREACHED(); }
+  void SetHovered(bool is_hovered) override { NOTREACHED(); }
+  void SetFocused(bool is_focused) override {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TestInkDrop);
+};
+
 TestInkDropDelegate::TestInkDropDelegate()
     : state_(InkDropState::HIDDEN), is_hovered_(false) {}
 
@@ -29,7 +53,9 @@ InkDropState TestInkDropDelegate::GetTargetInkDropState() const {
 }
 
 InkDrop* TestInkDropDelegate::GetInkDrop() {
-  return nullptr;
+  if (!ink_drop_.get())
+    ink_drop_.reset(new TestInkDrop);
+  return ink_drop_.get();
 }
 
 }  // namespace test