Make Dart_LoadLibrary and Dart_LoadSource take line and column offsets like Dart_LoadScript.

runtime/vm/service.cc

 // Copyright (c) 2013, 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 "vm/service.h"
 
 #include "include/dart_api.h"
 #include "platform/globals.h"
 
 #include "vm/compiler.h"
@@ skipping 568 matching lines @@
   }
   ASSERT((tag == Dart_kSourceTag) || (tag == Dart_kCanonicalizeUrl));
   if (tag == Dart_kCanonicalizeUrl) {
     // url is already canonicalized.
     return url;
   }
   Dart_Handle source = GetSource(url_string);
   if (Dart_IsError(source)) {
     return source;
   }
-  return Dart_LoadSource(library, url, source);
+  return Dart_LoadSource(library, url, source, 0, 0);
 }
 
 
 // A handler for a per-isolate request.
 //
 // If a handler returns true, the reply is complete and ready to be
 // posted.  If a handler returns false, then it is responsible for
 // posting the reply (this can be used for asynchronous delegation of
 // the response handling).
 typedef bool (*IsolateMessageHandler)(Isolate* isolate, JSONStream* stream);
@@ skipping 1916 matching lines @@
   while (current != NULL) {
     if (strcmp(name, current->name()) == 0) {
       return current;
     }
     current = current->next();
   }
   return NULL;
 }
 
 }  // namespace dart