Add an interface for retrieving the value of unsigned 64-bit integers.

runtime/bin/dartutils.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "bin/dartutils.h"
 
 #include "bin/file.h"
 #include "bin/globals.h"
 
 const char* DartUtils::kDartScheme = "dart:";
@@ skipping 19 matching lines @@
       }
     }
   }
   return NULL;  // Did not find a mapping for this URL.
 }
 
 
 int64_t DartUtils::GetIntegerValue(Dart_Handle value_obj) {
   ASSERT(Dart_IsInteger(value_obj));
   int64_t value = 0;
-  Dart_Handle result = Dart_IntegerValue(value_obj, &value);
+  Dart_Handle result = Dart_IntegerToInt64(value_obj, &value);
   ASSERT(!Dart_IsError(result));
   return value;
 }
 
 
 const char* DartUtils::GetStringValue(Dart_Handle str_obj) {
   const char* cstring = NULL;
   Dart_Handle result = Dart_StringToCString(str_obj, &cstring);
   ASSERT(!Dart_IsError(result));
   return cstring;
@@ skipping 162 matching lines @@
            path, File::PathSeparator(), filename);
 
   free(path);
   char* canonical_filename = File::GetCanonicalPath(absolute_filename);
   if (canonical_filename == NULL) {
     return absolute_filename;
   }
   free(absolute_filename);
   return canonical_filename;
 }