Remove runtime NEON detection

webrtc/common_audio/fir_filter.cc

 /*
  *  Copyright (c) 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 43 matching lines @@
   if (WebRtc_GetCPUInfo(kSSE2)) {
     filter =
         new FIRFilterSSE2(coefficients, coefficients_length, max_input_length);
   } else {
     filter = new FIRFilterC(coefficients, coefficients_length);
   }
 #endif
 #elif defined(WEBRTC_HAS_NEON)
   filter =
       new FIRFilterNEON(coefficients, coefficients_length, max_input_length);
-#elif defined(WEBRTC_DETECT_NEON)
-  if (WebRtc_GetCPUFeaturesARM() & kCPUFeatureNEON) {
-    filter =
-        new FIRFilterNEON(coefficients, coefficients_length, max_input_length);
-  } else {
-    filter = new FIRFilterC(coefficients, coefficients_length);
-  }
 #else
   filter = new FIRFilterC(coefficients, coefficients_length);
 #endif
 
   return filter;
 }
 
 FIRFilterC::FIRFilterC(const float* coefficients, size_t coefficients_length)
     : coefficients_length_(coefficients_length),
       state_length_(coefficients_length - 1),
@@ skipping 27 matching lines @@
         state_.get(), &in[length - state_length_], state_length_ * sizeof(*in));
   } else {
     memmove(state_.get(),
             &state_[length],
             (state_length_ - length) * sizeof(state_[0]));
     memcpy(&state_[state_length_ - length], in, length * sizeof(*in));
   }
 }
 
 }  // namespace webrtc