Experiment with AVX optimizations for FMAC, FMUL operations.

media/base/media.cc

Index: media/base/media.cc
diff --git a/media/base/media.cc b/media/base/media.cc
index 38daf05b8edd18960083a6eec0b38b5f9c298c79..641b668e1dcc2fae11b62d2021263bcfa19add5e 100644
--- a/media/base/media.cc
+++ b/media/base/media.cc
@@ -10,6 +10,7 @@
 #include "base/metrics/field_trial.h"
 #include "base/trace_event/trace_event.h"
 #include "media/base/media_switches.h"
+#include "media/base/vector_math.h"
 #include "media/base/yuv_convert.h"
 
 #if defined(OS_ANDROID)
@@ -41,6 +42,7 @@ class MediaInitializer {
 
     // Perform initialization of libraries which require runtime CPU detection.
     InitializeCPUSpecificYUVConversions();
+    vector_math::Initialize();
 
 #if !defined(MEDIA_DISABLE_FFMPEG)
     // Initialize CPU flags outside of the sandbox as this may query /proc for