Add ink drop masking to TrayBackgroundView

ui/views/controls/button/custom_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/custom_button.h"
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "build/build_config.h"
@@ skipping 129 matching lines @@
     delete button_;
     button_ = new TestCustomButton(has_ink_drop_action_on_click);
     InkDropHostViewTestApi(button_).SetInkDrop(std::move(ink_drop));
     widget_->SetContentsView(button_);
   }
 
   void CreateButtonWithRealInkDrop() {
     delete button_;
     button_ = new TestCustomButton(false);
     InkDropHostViewTestApi(button_).SetInkDrop(
-        base::MakeUnique<InkDropImpl>(button_));
+        base::MakeUnique<InkDropImpl>(button_, button_->size()));
     widget_->SetContentsView(button_);
   }
 
  protected:
   Widget* widget() { return widget_.get(); }
   TestCustomButton* button() { return button_; }
   void SetDraggedView(View* dragged_view) {
     widget_->dragged_view_ = dragged_view;
   }
 
@@ skipping 482 matching lines @@
   EXPECT_EQ(CustomButton::STATE_PRESSED, button()->state());
   EXPECT_FALSE(button()->pressed());
 
   ui::KeyEvent space_release(ui::ET_KEY_RELEASED, ui::VKEY_SPACE, ui::EF_NONE);
   SimulateKeyEvent(&space_release);
   EXPECT_EQ(CustomButton::STATE_NORMAL, button()->state());
   EXPECT_TRUE(button()->pressed());
 }
 
 }  // namespace views