mash: Preliminary support for widget hit test masks

components/mus/public/cpp/tests/test_window_tree.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 "components/mus/public/cpp/tests/test_window_tree.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace mus {
 
@@ skipping 37 matching lines @@
                                      mojo::RectPtr bounds) {
   got_change_ = true;
   change_id_ = change_id;
 }
 
 void TestWindowTree::SetClientArea(
     uint32_t window_id,
     mojo::InsetsPtr insets,
     mojo::Array<mojo::RectPtr> additional_client_areas) {}
 
+void TestWindowTree::SetHitTestMask(uint32_t window_id, mojo::RectPtr mask) {}
+
 void TestWindowTree::SetWindowVisibility(uint32_t change_id,
                                          uint32_t window_id,
                                          bool visible) {
   got_change_ = true;
   change_id_ = change_id;
 }
 
 void TestWindowTree::SetWindowProperty(uint32_t change_id,
                                        uint32_t window_id,
                                        const mojo::String& name,
@@ skipping 86 matching lines @@
 
 void TestWindowTree::GetWindowManagerClient(
     mojo::AssociatedInterfaceRequest<mojom::WindowManagerClient> internal) {}
 
 void TestWindowTree::GetCursorLocationMemory(
     const GetCursorLocationMemoryCallback& callback) {
   callback.Run(mojo::ScopedSharedBufferHandle());
 }
 
 }  // namespace mus