Update to Chromium //base at Chromium commit e3a753f17bac62738b0dbf0b36510f767b081e4b.

mac/foundation_util.mm

 // 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 "base/mac/foundation_util.h"
 
 #include <stdlib.h>
 #include <string.h>
 
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/mac/bundle_locations.h"
 #include "base/mac/mac_logging.h"
+#include "base/numerics/safe_conversions.h"
 #include "base/strings/sys_string_conversions.h"
 
 #if !defined(OS_IOS)
 extern "C" {
 CFTypeID SecACLGetTypeID();
 CFTypeID SecTrustedApplicationGetTypeID();
 Boolean _CFIsObjC(CFTypeID typeID, CFTypeRef obj);
 }  // extern "C"
 #endif
 
@@ skipping 399 matching lines @@
     return nil;
   return [NSString stringWithUTF8String:path.value().c_str()];
 }
 
 FilePath NSStringToFilePath(NSString* str) {
   if (![str length])
     return FilePath();
   return FilePath([str fileSystemRepresentation]);
 }
 
+bool CFRangeToNSRange(CFRange range, NSRange* range_out) {
+  if (base::IsValueInRangeForNumericType<decltype(range_out->location)>(
+          range.location) &&
+      base::IsValueInRangeForNumericType<decltype(range_out->length)>(
+          range.length) &&
+      base::IsValueInRangeForNumericType<decltype(range_out->location)>(
+          range.location + range.length)) {
+    *range_out = NSMakeRange(range.location, range.length);
+    return true;
+  }
+  return false;
+}
+
 }  // namespace mac
 }  // namespace base
 
 std::ostream& operator<<(std::ostream& o, const CFStringRef string) {
   return o << base::SysCFStringRefToUTF8(string);
 }
 
 std::ostream& operator<<(std::ostream& o, const CFErrorRef err) {
   base::ScopedCFTypeRef<CFStringRef> desc(CFErrorCopyDescription(err));
   base::ScopedCFTypeRef<CFDictionaryRef> user_info(CFErrorCopyUserInfo(err));
   CFStringRef errorDesc = NULL;
   if (user_info.get()) {
     errorDesc = reinterpret_cast<CFStringRef>(
         CFDictionaryGetValue(user_info.get(), kCFErrorDescriptionKey));
   }
   o << "Code: " << CFErrorGetCode(err)
     << " Domain: " << CFErrorGetDomain(err)
     << " Desc: " << desc.get();
   if(errorDesc) {
     o << "(" << errorDesc << ")";
   }
   return o;
 }