Prefix LOG and CHECK with AOS_

This prepares us for introducing glog more widely and transitioning
things over where they make sense.

Change-Id: Ic6c208882407bc2153fe875ffc736d66f5c8ade5
diff --git a/frc971/wpilib/loop_output_handler_test.cc b/frc971/wpilib/loop_output_handler_test.cc
index 8a7e903..12c3f96 100644
--- a/frc971/wpilib/loop_output_handler_test.cc
+++ b/frc971/wpilib/loop_output_handler_test.cc
@@ -49,14 +49,14 @@
 
  protected:
   void Write(const LoopOutputHandlerTestOutput &output) override {
-    LOG_STRUCT(DEBUG, "output", output);
+    AOS_LOG_STRUCT(DEBUG, "output", output);
     ++count_;
     last_time_ = event_loop()->monotonic_now();
   }
 
   void Stop() override {
     stop_time_ = event_loop()->monotonic_now();
-    LOG(DEBUG, "Stopping\n");
+    AOS_LOG(DEBUG, "Stopping\n");
   }
 
  private:
@@ -92,7 +92,7 @@
 
           ++count;
         }
-        LOG(INFO, "Ping\n");
+        AOS_LOG(INFO, "Ping\n");
       });
 
   // Kick off the ping timer handler.