Fix win64 build failure on size truncation

mojo/apps/js/v8_environment.cc

 // Copyright 2013 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.
 
 #include "mojo/apps/js/v8_environment.h"
 
 #include <stdlib.h>
 #include <string.h>
 
 #include "mojo/public/system/macros.h"
@@ skipping 22 matching lines @@
   return false;
 }
 
 const char kFlags[] = "--use_strict --harmony";
 
 }
 
 void InitializeV8() {
   v8::V8::SetArrayBufferAllocator(new ArrayBufferAllocator());
   v8::V8::InitializeICU();
-  v8::V8::SetFlagsFromString(kFlags, strlen(kFlags));
+  v8::V8::SetFlagsFromString(kFlags, static_cast<uint32_t>(strlen(kFlags)));

[viettrungluu, 2013/11/08 19:02:10]

I wonder if this shouldn't be using arraysize() instead. <shrug>

[jschuh, 2013/11/08 19:28:12]

It should, but I didn't think I could use base here.

   v8::V8::SetEntropySource(&GenerateEntropy);
   v8::V8::Initialize();
 }
 
 }  // namespace apps
 }  // mojo