Add ARM NEON intrinsic optimizations for SincResampler.

media/base/sinc_resampler.h

Index: media/base/sinc_resampler.h
diff --git a/media/base/sinc_resampler.h b/media/base/sinc_resampler.h
index ef2f176b29bc84bc680e41731243f0c52a5dc9bb..c6f424726bd6aca1d68712423be70182f920fce6 100644
--- a/media/base/sinc_resampler.h
+++ b/media/base/sinc_resampler.h
@@ -54,6 +54,9 @@ class MEDIA_EXPORT SincResampler {
   static float Convolve_SSE(const float* input_ptr, const float* k1,
                             const float* k2,
                             double kernel_interpolation_factor);
+  static float Convolve_NEON(const float* input_ptr, const float* k1,
+                             const float* k2,
+                             double kernel_interpolation_factor);
 
   // The ratio of input / output sample rates.
   double io_sample_rate_ratio_;