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

ui/gfx/range/range_f.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gfx/range/range_f.h"
 
 #include <algorithm>
 #include <limits>
 
-#include "base/float_util.h"
 #include "base/format_macros.h"
 #include "base/strings/stringprintf.h"
 
 namespace gfx {
 
 RangeF::RangeF()
     : start_(0.0f),
       end_(0.0f) {
 }
 
@@ skipping 58 matching lines @@
 
 std::string RangeF::ToString() const {
   return base::StringPrintf("{%f,%f}", start(), end());
 }
 
 std::ostream& operator<<(std::ostream& os, const RangeF& range) {
   return os << range.ToString();
 }
 
 }  // namespace gfx