Get skiaserve working on Windows.

tools/skiaserve/urlhandlers/SRGBModeHandler.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "UrlHandler.h"
 
 #include "microhttpd.h"
@@ skipping 16 matching lines @@
 
     if (commands.count() != 2) {
         return MHD_NO;
     }
 
     int enable;
     if (1 != sscanf(commands[1].c_str(), "%d", &enable)) {
         return MHD_NO;
     }
 
-    bool success = request->setSRGBMode(enable);
+    bool success = request->setSRGBMode(SkToBool(enable));
     if (!success) {
         return SendError(connection, "Unable to set requested mode");
     }
     return SendOK(connection);
 }