win: avoid warning on return of base::RandGenerator

util/net/http_multipart_builder.cc

Index: util/net/http_multipart_builder.cc
diff --git a/util/net/http_multipart_builder.cc b/util/net/http_multipart_builder.cc
index 3f66658c46ee54e54e123f5833d480b35396ac6c..74b07adab6cfe252957173f75acc0c38424d5372 100644
--- a/util/net/http_multipart_builder.cc
+++ b/util/net/http_multipart_builder.cc
@@ -46,7 +46,8 @@ std::string GenerateBoundaryString() {
   for (int index = 0; index < 32; ++index) {
     const char kCharacters[] =
         "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
-    int random_value = base::RandGenerator(strlen(kCharacters));
+    int random_value =
+        static_cast<int>(base::RandGenerator(strlen(kCharacters)));

[Mark Mentovai, 2014/12/17 01:15:24]

or base::RandInt(0, strlen(kCharacters) - 1)

[scottmg, 2014/12/17 18:49:45]

That seems better. Done.

     boundary_string += kCharacters[random_value];
   }
   boundary_string += "---";