Removed obsolete float_util.h as VS2013 supports standards well enough.

content/browser/renderer_host/input/motion_event_android.cc

Index: content/browser/renderer_host/input/motion_event_android.cc
diff --git a/content/browser/renderer_host/input/motion_event_android.cc b/content/browser/renderer_host/input/motion_event_android.cc
index 3f18f95561b3d650ccc3b3d36bd040f6f12f587f..5a437f4e4694a5f4f3c52527de2e2f91de20627c 100644
--- a/content/browser/renderer_host/input/motion_event_android.cc
+++ b/content/browser/renderer_host/input/motion_event_android.cc
@@ -6,8 +6,9 @@
 
 #include <android/input.h>
 
+#include <cmath>
+
 #include "base/android/jni_android.h"
-#include "base/float_util.h"
 #include "jni/MotionEvent_jni.h"
 #include "ui/events/event_constants.h"
 
@@ -92,7 +93,7 @@ base::TimeTicks FromAndroidTime(int64 time_ms) {
 }
 
 float ToValidFloat(float x) {
-  if (base::IsNaN(x))
+  if (std::isnan(x))
     return 0.f;
 
   // Wildly large orientation values have been observed in the wild after device