Do not inherit TaskPriority in TaskTraits.

base/task_scheduler/task_unittest.cc

 // Copyright 2016 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 "base/task_scheduler/task.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/task_scheduler/task_traits.h"
+#include "base/task_scheduler/test_utils.h"
 #include "base/time/time.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
 namespace internal {
 
 // Verify that the shutdown behavior of a BLOCK_SHUTDOWN delayed task is
 // adjusted to SKIP_ON_SHUTDOWN. The shutown behavior of other delayed tasks
 // should not change.
 TEST(TaskSchedulerTaskTest, ShutdownBehaviorChangeWithDelay) {
   Task continue_on_shutdown(FROM_HERE, BindOnce(&DoNothing),
-                            TaskTraits().WithShutdownBehavior(
+                            test::CreateTaskTraits().WithShutdownBehavior(
                                 TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN),
                             TimeDelta::FromSeconds(1));
   EXPECT_EQ(TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN,
             continue_on_shutdown.traits.shutdown_behavior());
 
-  Task skip_on_shutdown(
-      FROM_HERE, BindOnce(&DoNothing),
-      TaskTraits().WithShutdownBehavior(TaskShutdownBehavior::SKIP_ON_SHUTDOWN),
-      TimeDelta::FromSeconds(1));
+  Task skip_on_shutdown(FROM_HERE, BindOnce(&DoNothing),
+                        test::CreateTaskTraits().WithShutdownBehavior(
+                            TaskShutdownBehavior::SKIP_ON_SHUTDOWN),
+                        TimeDelta::FromSeconds(1));
   EXPECT_EQ(TaskShutdownBehavior::SKIP_ON_SHUTDOWN,
             skip_on_shutdown.traits.shutdown_behavior());
 
-  Task block_shutdown(
-      FROM_HERE, BindOnce(&DoNothing),
-      TaskTraits().WithShutdownBehavior(TaskShutdownBehavior::BLOCK_SHUTDOWN),
-      TimeDelta::FromSeconds(1));
+  Task block_shutdown(FROM_HERE, BindOnce(&DoNothing),
+                      test::CreateTaskTraits().WithShutdownBehavior(
+                          TaskShutdownBehavior::BLOCK_SHUTDOWN),
+                      TimeDelta::FromSeconds(1));
   EXPECT_EQ(TaskShutdownBehavior::SKIP_ON_SHUTDOWN,
             block_shutdown.traits.shutdown_behavior());
 }
 
 // Verify that the shutdown behavior of undelayed tasks is not adjusted.
 TEST(TaskSchedulerTaskTest, NoShutdownBehaviorChangeNoDelay) {
   Task continue_on_shutdown(FROM_HERE, BindOnce(&DoNothing),
-                            TaskTraits().WithShutdownBehavior(
+                            test::CreateTaskTraits().WithShutdownBehavior(
                                 TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN),
                             TimeDelta());
   EXPECT_EQ(TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN,
             continue_on_shutdown.traits.shutdown_behavior());
 
-  Task skip_on_shutdown(
-      FROM_HERE, BindOnce(&DoNothing),
-      TaskTraits().WithShutdownBehavior(TaskShutdownBehavior::SKIP_ON_SHUTDOWN),
-      TimeDelta());
+  Task skip_on_shutdown(FROM_HERE, BindOnce(&DoNothing),
+                        test::CreateTaskTraits().WithShutdownBehavior(
+                            TaskShutdownBehavior::SKIP_ON_SHUTDOWN),
+                        TimeDelta());
   EXPECT_EQ(TaskShutdownBehavior::SKIP_ON_SHUTDOWN,
             skip_on_shutdown.traits.shutdown_behavior());
 
-  Task block_shutdown(
-      FROM_HERE, BindOnce(&DoNothing),
-      TaskTraits().WithShutdownBehavior(TaskShutdownBehavior::BLOCK_SHUTDOWN),
-      TimeDelta());
+  Task block_shutdown(FROM_HERE, BindOnce(&DoNothing),
+                      test::CreateTaskTraits().WithShutdownBehavior(
+                          TaskShutdownBehavior::BLOCK_SHUTDOWN),
+                      TimeDelta());
   EXPECT_EQ(TaskShutdownBehavior::BLOCK_SHUTDOWN,
             block_shutdown.traits.shutdown_behavior());
 }
 
 }  // namespace internal
 }  // namespace base