Change ui cursor identifiers to an enum class.

ash/extended_desktop_unittest.cc

Index: ash/extended_desktop_unittest.cc
diff --git a/ash/extended_desktop_unittest.cc b/ash/extended_desktop_unittest.cc
index 5cca23da1d904c12cecbb609ec60614787f61287..e0e939ece9866b56c17ce48c66f163b92277e2f7 100644
--- a/ash/extended_desktop_unittest.cc
+++ b/ash/extended_desktop_unittest.cc
@@ -256,11 +256,11 @@ TEST_F(ExtendedDesktopTest, TestCursor) {
   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
   aura::WindowTreeHost* host0 = root_windows[0]->GetHost();
   aura::WindowTreeHost* host1 = root_windows[1]->GetHost();
-  EXPECT_EQ(ui::kCursorPointer, host0->last_cursor().native_type());
-  EXPECT_EQ(ui::kCursorNull, host1->last_cursor().native_type());
-  Shell::Get()->cursor_manager()->SetCursor(ui::kCursorCopy);
-  EXPECT_EQ(ui::kCursorCopy, host0->last_cursor().native_type());
-  EXPECT_EQ(ui::kCursorCopy, host1->last_cursor().native_type());
+  EXPECT_EQ(ui::CursorType::kPointer, host0->last_cursor().native_type());
+  EXPECT_EQ(ui::CursorType::kNull, host1->last_cursor().native_type());
+  Shell::Get()->cursor_manager()->SetCursor(ui::CursorType::kCopy);
+  EXPECT_EQ(ui::CursorType::kCopy, host0->last_cursor().native_type());
+  EXPECT_EQ(ui::CursorType::kCopy, host1->last_cursor().native_type());
 }
 
 TEST_F(ExtendedDesktopTest, TestCursorLocation) {