Use ink drop hover for focus states on toolbar buttons and location

ui/views/controls/button/label_button_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/controls/button/label_button.h"
 
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/strings/utf_string_conversions.h"
 #include "third_party/skia/include/core/SkBitmap.h"
@@ skipping 411 matching lines @@
   bool is_hovered_;
 
   DISALLOW_COPY_AND_ASSIGN(TestButtonInkDropDelegate);
 };
 
 // A generic LabelButton configured with an |InkDropDelegate|.
 class InkDropLabelButton : public LabelButton {
  public:
   InkDropLabelButton()
       : LabelButton(nullptr, base::string16()),
-        test_ink_drop_delegate_(this, this) {
-    set_ink_drop_delegate(&test_ink_drop_delegate_);
+        test_ink_drop_delegate_(new TestButtonInkDropDelegate(this, this)) {
+    set_ink_drop_delegate(base::WrapUnique(test_ink_drop_delegate_));
   }
 
   ~InkDropLabelButton() override {}
 
   TestButtonInkDropDelegate* test_ink_drop_delegate() {
-    return &test_ink_drop_delegate_;
+    return test_ink_drop_delegate_;
   }
 
  private:
-  TestButtonInkDropDelegate test_ink_drop_delegate_;
+  // Weak pointer.
+  TestButtonInkDropDelegate* test_ink_drop_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(InkDropLabelButton);
 };
 
 // Test fixture for a LabelButton that has an ink drop configured.
 class InkDropLabelButtonTest : public ViewsTestBase {
  public:
   InkDropLabelButtonTest() {}
 
   // ViewsTestBase:
@@ skipping 51 matching lines @@
 
 // Verifies the target event handler View is the |LabelButton| and not any of
 // the child Views.
 TEST_F(InkDropLabelButtonTest, TargetEventHandler) {
   View* target_view = widget_->GetRootView()->GetEventHandlerForPoint(
       button_->bounds().CenterPoint());
   EXPECT_EQ(button_, target_view);
 }
 
 }  // namespace views