Add ink drop masking to TrayBackgroundView

ui/views/animation/ink_drop_impl_unittest.cc

 // Copyright 2015 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 <memory>
 
 #include "ui/views/animation/ink_drop_impl.h"
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 46 matching lines @@
   std::unique_ptr<test::InkDropImplTestApi> test_api_;
 
   DISALLOW_COPY_AND_ASSIGN(InkDropImplTest);
 };
 
 InkDropImplTest::InkDropImplTest()
     : task_runner_(new base::TestSimpleTaskRunner),
       thread_task_runner_handle_(
           new base::ThreadTaskRunnerHandle(task_runner_)),
       ink_drop_host_(base::MakeUnique<TestInkDropHost>()),
-      ink_drop_(base::MakeUnique<InkDropImpl>(ink_drop_host_.get())),
+      ink_drop_(
+          base::MakeUnique<InkDropImpl>(ink_drop_host_.get(), gfx::Size())),
       test_api_(base::MakeUnique<test::InkDropImplTestApi>(ink_drop_.get())) {
   ink_drop_host_->set_disable_timers_for_test(true);
 }
 
 InkDropImplTest::~InkDropImplTest() {}
 
 void InkDropImplTest::RunPendingTasks() {
   task_runner_->RunPendingTasks();
   EXPECT_FALSE(task_runner_->HasPendingTask());
 }
@@ skipping 480 matching lines @@
   EXPECT_TRUE(test_api()->IsHighlightFadingInOrVisible());
 
   ink_drop()->SetHovered(false);
   ink_drop()->SetFocused(false);
 
   EXPECT_TRUE(test_api()->IsHighlightFadingInOrVisible());
   EXPECT_FALSE(test_api()->ShouldHighlight());
 }
 
 }  // namespace views