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

gpu/command_buffer/service/gles2_cmd_decoder_autogen.h

 // Copyright 2014 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.
 
 // This file is auto-generated from
 // gpu/command_buffer/build_gles2_cmd_buffer.py
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
@@ skipping 2197 matching lines @@
       transformfeedback, &service_transformfeedback);
   return error::kNoError;
 }
 
 error::Error GLES2DecoderImpl::HandleLineWidth(uint32_t immediate_data_size,
                                                const void* cmd_data) {
   const gles2::cmds::LineWidth& c =
       *static_cast<const gles2::cmds::LineWidth*>(cmd_data);
   (void)c;
   GLfloat width = static_cast<GLfloat>(c.width);
-  if (width <= 0.0f || base::IsNaN(width)) {
+  if (width <= 0.0f || std::isnan(width)) {
     LOCAL_SET_GL_ERROR(GL_INVALID_VALUE, "LineWidth", "width out of range");
     return error::kNoError;
   }
   if (state_.line_width != width) {
     state_.line_width = width;
     glLineWidth(width);
   }
   return error::kNoError;
 }
 
@@ skipping 2649 matching lines @@
         state_.enable_flags.cached_rasterizer_discard = enabled;
         return true;
       }
       return false;
     default:
       NOTREACHED();
       return false;
   }
 }
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_AUTOGEN_H_