PlatformThreadHandle: remove public id() interface

base/trace_event/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 <math.h>
 #include <cstdlib>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
@@ skipping 1529 matching lines @@
   for (int i = 0; i < kNumThreads; i++)
     threads[i] = new Thread(StringPrintf("Thread %d", i));
 
   // Enable tracing.
   BeginTrace();
 
   // Now run some trace code on these threads.
   WaitableEvent* task_complete_events[kNumThreads];
   for (int i = 0; i < kNumThreads; i++) {
     task_complete_events[i] = new WaitableEvent(false, false);
-    threads[i]->Start();
+    threads[i]->StartAndWaitForTesting();
     thread_ids[i] = threads[i]->thread_id();
     threads[i]->task_runner()->PostTask(
         FROM_HERE, base::Bind(&TraceManyInstantEvents, i, kNumEvents,
                               task_complete_events[i]));
   }
   for (int i = 0; i < kNumThreads; i++) {
     task_complete_events[i]->Wait();
   }
 
   // Shut things down.
@@ skipping 1397 matching lines @@
 }
 
 TEST_F(TraceEventTestFixture, SyntheticDelayConfigurationToString) {
   const char filter[] = "DELAY(test.Delay;16;oneshot)";
   TraceConfig config(filter, "");
   EXPECT_EQ(filter, config.ToCategoryFilterString());
 }
 
 }  // namespace trace_event
 }  // namespace base