Fix //third_party/cec to not disable -Wunused-function.

ui/aura/mus/window_tree_client_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 "ui/aura/mus/window_tree_client.h"
 
 #include <stdint.h>
 
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 40 matching lines @@
   return WindowMus::Get(window)->server_id();
 }
 
 void SetWindowVisibility(Window* window, bool visible) {
   if (visible)
     window->Show();
   else
     window->Hide();
 }
 
-Window* GetFirstRoot(WindowTreeClient* client) {
-  return client->GetRoots().empty() ? nullptr : *client->GetRoots().begin();
-}
-
 bool IsWindowHostVisible(Window* window) {
   return window->GetRootWindow()->GetHost()->compositor()->IsVisible();
 }
 
 // Register some test window properties for aura/mus conversion.
 void RegisterTestProperties(PropertyConverter* converter) {
   converter->RegisterProperty(kTestPropertyKey1, kTestPropertyServerKey1);
   converter->RegisterProperty(kTestPropertyKey2, kTestPropertyServerKey2);
   converter->RegisterProperty(kTestPropertyKey3, kTestPropertyServerKey3);
 }
@@ skipping 359 matching lines @@
   ASSERT_TRUE(window_tree()->AckSingleChangeOfType(
       WindowTreeChangeType::VISIBLE, false));
   EXPECT_EQ(server_changed_visible, root_window()->TargetVisibility());
 
   // Simulate server changing back to original visible. Should take immediately.
   window_tree_client()->OnWindowVisibilityChanged(server_id(root_window()),
                                                   original_visible);
   EXPECT_EQ(original_visible, root_window()->TargetVisibility());
 }
 
-/*
-// Verifies |is_modal| is reverted if the server replied that the change failed.
-TEST_F(WindowTreeClientWmTest, SetModalFailed) {
-  WindowTreeSetup setup;
-  Window* root = GetFirstRoot();
-  ASSERT_TRUE(root);
-  EXPECT_FALSE(root->is_modal());
-  root->SetModal();
-  uint32_t change_id;
-  ASSERT_TRUE(window_tree()->GetAndClearChangeId(&change_id));
-  EXPECT_TRUE(root->is_modal());
-  window_tree_client()->OnChangeCompleted(change_id, false);
-  EXPECT_FALSE(root->is_modal());
-}
-*/
-
 namespace {
 
 class InputEventBasicTestWindowDelegate : public test::TestWindowDelegate {
  public:
   static uint32_t constexpr kEventId = 1;
 
   explicit InputEventBasicTestWindowDelegate(TestWindowTree* test_window_tree)
       : test_window_tree_(test_window_tree) {}
   ~InputEventBasicTestWindowDelegate() override {}
 
@@ skipping 885 matching lines @@
   window1.Init(ui::LAYER_NOT_DRAWN);
   Window* window2 = new Window(nullptr);
   window2->Init(ui::LAYER_NOT_DRAWN);
   window1.AddChild(window2);
   window_tree()->AckAllChanges();
   window_tree_client()->OnWindowDeleted(server_id(window2));
   EXPECT_FALSE(window_tree()->has_change());
 }
 
 }  // namespace aura