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

gpu/command_buffer/build_gles2_cmd_buffer.py

Index: gpu/command_buffer/build_gles2_cmd_buffer.py
diff --git a/gpu/command_buffer/build_gles2_cmd_buffer.py b/gpu/command_buffer/build_gles2_cmd_buffer.py
index 040703352c1b382c0f0e3ec2fe58a064582b045b..b1e5aa9a6c8f76df59cde238f50fe8e0053ee2e7 100755
--- a/gpu/command_buffer/build_gles2_cmd_buffer.py
+++ b/gpu/command_buffer/build_gles2_cmd_buffer.py
@@ -4409,7 +4409,7 @@ class StateSetHandler(TypeHandler):
         # Make this behavior consistent within Chromium, and avoid leaking GL
         # errors by generating the error in the command buffer instead of
         # letting the GL driver generate it.
-        code.append("base::IsNaN(%s)" % args[ndx].name)
+        code.append("std::isnan(%s)" % args[ndx].name)
       if len(code):
         file.Write("  if (%s) {\n" % " ||\n      ".join(code))
         file.Write(