Rename TaskRunner::RunsTasksOnCurrentThread() in //ipc, //mojo

mojo/public/cpp/system/simple_watcher.cc

Index: mojo/public/cpp/system/simple_watcher.cc
diff --git a/mojo/public/cpp/system/simple_watcher.cc b/mojo/public/cpp/system/simple_watcher.cc
index 9e34b166bc8c98bdf390cb9cc497e8e4a7f73e4a..a8b5a0d5d6e696deea0a2fb75f3be7f02926fc8c 100644
--- a/mojo/public/cpp/system/simple_watcher.cc
+++ b/mojo/public/cpp/system/simple_watcher.cc
@@ -132,7 +132,7 @@ SimpleWatcher::SimpleWatcher(const tracked_objects::Location& from_here,
       weak_factory_(this) {
   MojoResult rv = CreateWatcher(&Context::CallNotify, &watcher_handle_);
   DCHECK_EQ(MOJO_RESULT_OK, rv);
-  DCHECK(task_runner_->RunsTasksOnCurrentThread());
+  DCHECK(task_runner_->RunsTasksInCurrentSequence());
 }
 
 SimpleWatcher::~SimpleWatcher() {