mac: Prepare most test code for -Wunused-functions too.

base/debug/trace_event_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/debug/trace_event_unittest.h"
 
 #include <cstdlib>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 823 matching lines @@
   }
 
   EXPECT_FALSE(results[-1][-1]);
   for (int thread = 0; thread < num_threads; thread++) {
     for (int event = 0; event < num_events; event++) {
       EXPECT_TRUE(results[thread][event]);
     }
   }
 }
 
-void TraceCallsWithCachedCategoryPointersPointers(const char* name_str) {
-  TRACE_EVENT0("category name1", name_str);
-  TRACE_EVENT_INSTANT0("category name2", name_str, TRACE_EVENT_SCOPE_THREAD);
-  TRACE_EVENT_BEGIN0("category name3", name_str);
-  TRACE_EVENT_END0("category name4", name_str);
-}
-
 }  // namespace
 
 void HighResSleepForTraceTest(base::TimeDelta elapsed) {
   base::TimeTicks end_time = base::TimeTicks::HighResNow() + elapsed;
   do {
     base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(1));
   } while (base::TimeTicks::HighResNow() < end_time);
 }
 
 // Simple Test for emitting data and validating it was received.
@@ skipping 1578 matching lines @@
     double timestamp;
     EXPECT_TRUE(item->GetDouble("ts", &timestamp));
     EXPECT_GE(timestamp, last_timestamp);
     EXPECT_LE(timestamp, end_time);
     last_timestamp = timestamp;
   }
 }
 
 }  // namespace debug
 }  // namespace base