Remove unused CriticalSection::IsLocked()

webrtc/base/criticalsection_unittest.cc

 /*
  *  Copyright 2014 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 288 matching lines @@
   LockRunner<CriticalSectionLock> runner;
   ScopedPtrCollection<Thread> threads;
   StartThreads(&threads, &runner);
   runner.SetExpectedThreadCount(kNumThreads);
 
   // Release the hounds!
   EXPECT_TRUE(runner.Run());
   EXPECT_EQ(0, runner.shared_value());
 }
 
-#if !defined(NDEBUG) || defined(DCHECK_ALWAYS_ON)
-TEST(CriticalSectionTest, IsLocked) {
-  // Simple single-threaded test of IsLocked.
-  CriticalSection cs;
-  EXPECT_FALSE(cs.IsLocked());
-  cs.Enter();
-  EXPECT_TRUE(cs.IsLocked());
-  cs.Leave();
-  EXPECT_FALSE(cs.IsLocked());
-  if (!cs.TryEnter())
-    FAIL();
-  EXPECT_TRUE(cs.IsLocked());
-  cs.Leave();
-  EXPECT_FALSE(cs.IsLocked());
-}
-#endif
-
 class PerfTestData {
  public:
   PerfTestData(int expected_count, Event* event)
       : cache_line_barrier_1_(), cache_line_barrier_2_(),
         expected_count_(expected_count), event_(event) {
     cache_line_barrier_1_[0]++;  // Avoid 'is not used'.
     cache_line_barrier_2_[0]++;  // Avoid 'is not used'.
   }
   ~PerfTestData() {}
 
@@ skipping 86 matching lines @@
   for (auto& t : threads)
     t.Start(&test_data, kThreadRepeats, 1);
 
   event.Wait(Event::kForever);
 
   for (auto& t : threads)
     t.Stop();
 }
 
 }  // namespace rtc