Fix gfx::Range::ToString() to use the correct format specifier.

ui/gfx/range/range.cc

 // Copyright (c) 2012 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 "ui/gfx/range/range.h"
 
+#include <inttypes.h>
+
 #include <algorithm>
 #include <limits>
 
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 
 namespace gfx {
 
 Range::Range()
     : start_(0),
@@ skipping 53 matching lines @@
   uint32_t min = std::max(GetMin(), range.GetMin());
   uint32_t max = std::min(GetMax(), range.GetMax());
 
   if (min >= max)  // No intersection.
     return InvalidRange();
 
   return Range(min, max);
 }
 
 std::string Range::ToString() const {
-  return base::StringPrintf("{%d,%d}", start(), end());
+  return base::StringPrintf("{%" PRIu32 ",%" PRIu32 "}", start(), end());
 }
 
 std::ostream& operator<<(std::ostream& os, const Range& range) {
   return os << range.ToString();
 }
 
 }  // namespace gfx