Revert of Modify profiles for H264 encode SW fallback

webrtc/media/engine/videoencodersoftwarefallbackwrapper.h

Index: webrtc/media/engine/videoencodersoftwarefallbackwrapper.h
diff --git a/webrtc/media/engine/videoencodersoftwarefallbackwrapper.h b/webrtc/media/engine/videoencodersoftwarefallbackwrapper.h
index 8061c008c65a7fd6f18f873e9738ee3ee12ea268..d11a0f678e1c1346138b9fbda9ba8c7122340766 100644
--- a/webrtc/media/engine/videoencodersoftwarefallbackwrapper.h
+++ b/webrtc/media/engine/videoencodersoftwarefallbackwrapper.h
@@ -77,7 +77,6 @@
   bool TryReInitForcedFallbackEncoder();
   void ValidateSettingsForForcedFallback();
   bool IsForcedFallbackActive() const;
-  void MaybeModifyCodecForFallback();
 
   // Settings used in the last InitEncode call and used if a dynamic fallback to
   // software is required.
@@ -95,7 +94,7 @@
   uint32_t packet_loss_;
   int64_t rtt_;
 
-  cricket::VideoCodec codec_;
+  const cricket::VideoCodec codec_;
   webrtc::VideoEncoder* const encoder_;
 
   std::unique_ptr<webrtc::VideoEncoder> fallback_encoder_;