set nominmax on windows

src/utils/win/SkWGL_win.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkWGL.h"
 
@@ skipping 294 matching lines @@
             msaaIAttrs[kIAttrsCount + 3] = 1;
             msaaIAttrs[kIAttrsCount + 4] = 0;
             msaaIAttrs[kIAttrsCount + 5] = 0;
         } else {
             msaaIAttrs[kIAttrsCount + 2] = 0;
             msaaIAttrs[kIAttrsCount + 3] = 0;
         }
         unsigned int num;
         int formats[64];
         extensions.choosePixelFormat(dc, msaaIAttrs, fAttrs, 64, formats, &num);
-        num = min(num,64);
+        num = SkTMin(num, 64U);
         int formatToTry = extensions.selectFormat(formats,
                                                   num,
                                                   dc,
                                                   msaaSampleCount);
         DescribePixelFormat(dc, formatToTry, sizeof(pfd), &pfd);
         if (SetPixelFormat(dc, formatToTry, &pfd)) {
             format = formatToTry;
         }
     }
 
@@ skipping 33 matching lines @@
     }
 
     if (NULL == glrc) {
         glrc = wglCreateContext(dc);
     }
     SkASSERT(glrc);
 
     wglMakeCurrent(prevDC, prevGLRC);
     return glrc;
 }