Move media library AutoTaskRunner to base and rename ScopedTaskRunner.

base/task_unittest.cc

Index: base/task_unittest.cc
diff --git a/base/task_unittest.cc b/base/task_unittest.cc
index 25c201d267b801c0008c2a3074b4fd84755fc253..e0cb659cf094c01db34730189989efef07a243d2 100644
--- a/base/task_unittest.cc
+++ b/base/task_unittest.cc
@@ -49,4 +49,62 @@ TEST(TaskTest, TestCancelInDestructor) {
   delete cancelable_task;
 }
 
+class DoneTask : public Task {
+ public:
+  DoneTask(int* run_count, bool* was_deleted)
+      : run_count_(run_count), was_deleted_(was_deleted) {
+  }
+  virtual ~DoneTask() {
+    *was_deleted_ = true;
+  }
+
+  virtual void Run() {
+    ++(*run_count_);
+  }
+
+  int* run_count_;
+  bool* was_deleted_;
+};
+
+TEST(TaskTest, TestScopedTaskRunnerExitScope) {
+  int run_count = 0;
+  bool was_deleted = false;
+  {
+    base::ScopedTaskRunner runner(new DoneTask(&run_count, &was_deleted));
+    EXPECT_EQ(0, run_count);
+  }
+  EXPECT_EQ(1, run_count);
+  EXPECT_TRUE(was_deleted);
+}
+
+TEST(TaskTest, TestScopedTaskRunnerRelease) {
+  int run_count = 0;
+  bool was_deleted = false;
+  {
+    base::ScopedTaskRunner runner(new DoneTask(&run_count, &was_deleted));
+    delete runner.Release();
+    EXPECT_TRUE(was_deleted);
+  }
+  EXPECT_EQ(0, run_count);
+}
+
+TEST(TaskTest, TestScopedTaskRunnerManualRun) {
+  int run_count = 0;
+  Task* done_task = NULL;
+  bool was_deleted = false;
+  {
+    base::ScopedTaskRunner runner(new DoneTask(&run_count, &was_deleted));
+    done_task = runner.Release();
+    EXPECT_TRUE(NULL != done_task);
+    EXPECT_FALSE(was_deleted);
+    EXPECT_EQ(0, run_count);
+    done_task->Run();
+    EXPECT_FALSE(was_deleted);
+    EXPECT_EQ(1, run_count);
+  }
+  EXPECT_EQ(1, run_count);
+  delete done_task;
+  EXPECT_TRUE(was_deleted);
+}
+
 }  // namespace