Change Sleep() comment in test fixture.

TBR=phoglund

Review URL: https://webrtc-codereview.appspot.com/1023006

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@3335 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/voice_engine/test/auto_test/fixtures/before_initialization_fixture.h b/voice_engine/test/auto_test/fixtures/before_initialization_fixture.h
index d9c29d5..c65ea6a 100644
--- a/voice_engine/test/auto_test/fixtures/before_initialization_fixture.h
+++ b/voice_engine/test/auto_test/fixtures/before_initialization_fixture.h
@@ -75,7 +75,7 @@
   virtual ~BeforeInitializationFixture();
 
  protected:
-  // Use this sleep function to sleep in test (avoid sleep macro).
+  // Use this sleep function to sleep in tests.
   void Sleep(long milliseconds);
 
   webrtc::VoiceEngine*        voice_engine_;