TaskScheduler: Add TaskRunnerHandle support to TaskScheduler tasks

base/task_scheduler/test_task_factory.h

Index: base/task_scheduler/test_task_factory.h
diff --git a/base/task_scheduler/test_task_factory.h b/base/task_scheduler/test_task_factory.h
index 9a11882209b20ae559197b4e638b6692f23490cf..4afb786894deac82d534349bb5b90403002622d0 100644
--- a/base/task_scheduler/test_task_factory.h
+++ b/base/task_scheduler/test_task_factory.h
@@ -26,6 +26,8 @@ namespace test {
 
 // A TestTaskFactory posts tasks to a TaskRunner and verifies that they run as
 // expected. Generates a test failure when:
+// - The TaskRunnerHandles set in the context of the task don't match what's
+// - expected for the tested ExecutionMode.

[fdoray, 2016/04/28 14:37:52]

no hyphen on this line

[gab, 2016/04/28 15:43:23]

Done.

 // - The ExecutionMode of the TaskRunner is SEQUENCED or SINGLE_THREADED and
 //   Tasks don't run in posting order.
 // - The ExecutionMode of the TaskRunner is SINGLE_THREADED and Tasks don't