content: Add heartbeat trace for CategorizedWorkerPool.

base/synchronization/condition_variable_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.
 
 // Multi-threaded tests of ConditionVariable class.
 
 #include "base/synchronization/condition_variable.h"
 
 #include <time.h>
 
@@ skipping 176 matching lines @@
 
   cv.TimedWait(WAIT_TIME + FUDGE_TIME);
   TimeDelta duration = TimeTicks::Now() - start;
   // We can't use EXPECT_GE here as the TimeDelta class does not support the
   // required stream conversion.
   EXPECT_TRUE(duration >= WAIT_TIME);
 
   lock.Release();
 }
 
+void SignalConditionVariable(ConditionVariable* cv) {
+  cv->Signal();
+}
+
+TEST_F(ConditionVariableTest, TimedWaitTimeoutTest) {
+  Lock lock;
+  ConditionVariable cv(&lock);
+  lock.Acquire();
+
+  bool timed_out = cv.TimedWait(TimeDelta::FromMilliseconds(50));
+  EXPECT_TRUE(timed_out);
+
+  Thread thread("Helper");
+  thread.Start();
+  thread.task_runner()->PostTask(FROM_HERE,
+                                 base::Bind(&SignalConditionVariable, &cv));
+  timed_out = cv.TimedWait(TimeDelta::FromMilliseconds(300));
+  EXPECT_FALSE(timed_out);
+
+  lock.Release();
+}
+
 #if defined(OS_POSIX)
 const int kDiscontinuitySeconds = 2;
 
 void BackInTime(Lock* lock) {
   AutoLock auto_lock(*lock);
 
   timeval tv;
   gettimeofday(&tv, NULL);
   tv.tv_sec -= kDiscontinuitySeconds;
   settimeofday(&tv, NULL);
@@ skipping 552 matching lines @@
       base::AutoLock auto_lock(lock_);
       // Send notification that we completed our "work."
       WorkIsCompleted(thread_id);
     }
   }
 }
 
 }  // namespace
 
 }  // namespace base