Change single-interface mojo bindings to use SequencedTaskRunner.

device/wake_lock/wake_lock_service_context.h

Index: device/wake_lock/wake_lock_service_context.h
diff --git a/device/wake_lock/wake_lock_service_context.h b/device/wake_lock/wake_lock_service_context.h
index 01e7ebef29d1c6df794266af38e405b3ef41176d..f5b606d8fa08bc46e1bbc4c9e40028707777b028 100644
--- a/device/wake_lock/wake_lock_service_context.h
+++ b/device/wake_lock/wake_lock_service_context.h
@@ -18,6 +18,10 @@
 #include "mojo/public/cpp/bindings/interface_request.h"
 #include "ui/gfx/native_widget_types.h"
 
+namespace base {
+class SingleThreadTaskRunner;
+}
+
 namespace device {
 
 class PowerSaveBlocker;