Revert of Enable -Winconsistent-missing-override flag.

webrtc/modules/utility/source/file_recorder_impl.h

Index: webrtc/modules/utility/source/file_recorder_impl.h
diff --git a/webrtc/modules/utility/source/file_recorder_impl.h b/webrtc/modules/utility/source/file_recorder_impl.h
index 44169cc267e28546d514a4e3b33de9c99fb9a6d3..697d759375708b83c2bd66bead3a05fa958288f2 100644
--- a/webrtc/modules/utility/source/file_recorder_impl.h
+++ b/webrtc/modules/utility/source/file_recorder_impl.h
@@ -45,23 +45,23 @@
     virtual ~FileRecorderImpl();
 
     // FileRecorder functions.
-    int32_t RegisterModuleFileCallback(FileCallback* callback) override;
-    FileFormats RecordingFileFormat() const override;
-    int32_t StartRecordingAudioFile(
+    virtual int32_t RegisterModuleFileCallback(FileCallback* callback);
+    virtual FileFormats RecordingFileFormat() const;
+    virtual int32_t StartRecordingAudioFile(
         const char* fileName,
         const CodecInst& codecInst,
         uint32_t notificationTimeMs) override;
-    int32_t StartRecordingAudioFile(
+    virtual int32_t StartRecordingAudioFile(
         OutStream& destStream,
         const CodecInst& codecInst,
         uint32_t notificationTimeMs) override;
-    int32_t StopRecording() override;
-    bool IsRecording() const override;
-    int32_t codec_info(CodecInst& codecInst) const override;
-    int32_t RecordAudioToFile(
+    virtual int32_t StopRecording();
+    virtual bool IsRecording() const;
+    virtual int32_t codec_info(CodecInst& codecInst) const;
+    virtual int32_t RecordAudioToFile(
         const AudioFrame& frame,
-        const TickTime* playoutTS = NULL) override;
-    int32_t StartRecordingVideoFile(
+        const TickTime* playoutTS = NULL);
+    virtual int32_t StartRecordingVideoFile(
         const char* fileName,
         const CodecInst& audioCodecInst,
         const VideoCodec& videoCodecInst,
@@ -69,7 +69,7 @@
     {
         return -1;
     }
-    int32_t RecordVideoToFile(const VideoFrame& videoFrame) override {
+    virtual int32_t RecordVideoToFile(const VideoFrame& videoFrame) {
         return -1;
     }