FileWrapper[Impl] modifications and actually remove the "Impl" class.

webrtc/modules/audio_device/test/func_test_manager.cc

Index: webrtc/modules/audio_device/test/func_test_manager.cc
diff --git a/webrtc/modules/audio_device/test/func_test_manager.cc b/webrtc/modules/audio_device/test/func_test_manager.cc
index f16f296011bcfa2bebed4bce805530848ab1d9e0..89afa1ebe085e4279fd38b5258e4db4ceadc82e8 100644
--- a/webrtc/modules/audio_device/test/func_test_manager.cc
+++ b/webrtc/modules/audio_device/test/func_test_manager.cc
@@ -169,15 +169,10 @@ int32_t AudioTransportImpl::SetFilePlayout(bool enable, const char* fileName)
 {
     _playFromFile = enable;
     if (enable)
-    {
-        return (_playFile.OpenFile(fileName, true, true, false));
-    } else
-    {
-        _playFile.Flush();
-        return (_playFile.CloseFile());
-    }
+      return (_playFile.OpenFile(fileName, true));
+    _playFile.CloseFile();
+    return 0;
 }
-;
 
 void AudioTransportImpl::SetFullDuplex(bool enable)
 {
@@ -462,7 +457,7 @@ int32_t AudioTransportImpl::NeedMorePlayData(
         }
     }  // if (_fullDuplex)
 
-    if (_playFromFile && _playFile.Open())
+    if (_playFromFile && _playFile.is_open())
     {
         int16_t fileBuf[480];
 
@@ -491,7 +486,7 @@ int32_t AudioTransportImpl::NeedMorePlayData(
                 audio16++;
             }
         }
-    }  // if (_playFromFile && _playFile.Open())
+    }  // if (_playFromFile && _playFile.is_open())
 
     _playCount++;