Block incognito browser windows for voice interaction.

ui/wm/core/window_util_unittest.cc

 // Copyright 2014 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/wm/core/window_util.h"
 
 #include <memory>
 
+#include "base/bind.h"
 #include "ui/aura/test/aura_test_base.h"
 #include "ui/aura/test/test_windows.h"
 #include "ui/aura/window.h"
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_tree_owner.h"
 
 namespace wm {
 
 typedef aura::test::AuraTestBase WindowUtilTest;
 
@@ skipping 24 matching lines @@
 
   // The original window should have both.
   ASSERT_EQ(2u, window1->layer()->children().size());
   EXPECT_EQ(window11->layer(), window1->layer()->children()[0]);
   EXPECT_EQ(window12->layer(), window1->layer()->children()[1]);
 
   // Delete the window before the acquired layer is deleted.
   window11.reset();
 }
 
+// Test if map_func is correctly executed in RecreateLayerWithClosure.
+TEST_F(WindowUtilTest, RecreateLayersWithClosure) {
+  std::unique_ptr<aura::Window> window1(
+      aura::test::CreateTestWindowWithId(0, NULL));
+  std::unique_ptr<aura::Window> window11(
+      aura::test::CreateTestWindowWithId(1, window1.get()));
+  std::unique_ptr<aura::Window> window12(
+      aura::test::CreateTestWindowWithId(2, window1.get()));
+
+  ASSERT_EQ(2u, window1->layer()->children().size());
+
+  auto tree_empty = wm::RecreateLayersWithClosure(
+      window1.get(),
+      base::BindRepeating(
+          [](const aura::Window* to_filter,
+             ui::LayerOwner* owner) -> std::unique_ptr<ui::Layer> {
+            if (owner->layer() == to_filter->layer())
+              return nullptr;
+            return owner->RecreateLayer();
+          },
+          window1.get()));
+
+  // The root is filtered. RecreateLayersWithClosure should return nullptr.
+  ASSERT_TRUE(!tree_empty);

[sky, 2017/05/18 02:50:15]

The not makes this slightly hard to parse, use ASSERT_FALSE(tree_empty).

[Muyuan, 2017/05/18 02:58:24]

Done.

+
+  auto tree = wm::RecreateLayersWithClosure(
+      window1.get(),
+      base::BindRepeating(
+          [](const aura::Window* to_filter,
+             ui::LayerOwner* owner) -> std::unique_ptr<ui::Layer> {
+            if (owner->layer() == to_filter->layer())
+              return nullptr;
+            return owner->RecreateLayer();
+          },
+          window12.get()));
+
+  // window12 is filtered out in the above recreation logic.

[sky, 2017/05/18 02:50:15]

ASSERT_TRUE(tree) ?

[Muyuan, 2017/05/18 02:58:24]

Done.

+  ASSERT_EQ(1u, tree->root()->children().size());
+  // Child layer is new instance.
+  EXPECT_NE(window11->layer(), tree->root()->children()[0]);
+
+  // The original window should have both.
+  ASSERT_EQ(2u, window1->layer()->children().size());
+  EXPECT_EQ(window11->layer(), window1->layer()->children()[0]);
+  EXPECT_EQ(window12->layer(), window1->layer()->children()[1]);
+}
+
 }  // namespace wm