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

runtime/bin/vmservice_impl.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 "bin/vmservice_impl.h"
 
 #include "include/dart_api.h"
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
@@ skipping 176 matching lines @@
 Dart_Handle VmService::LoadScript(const char* name) {
   Dart_Handle url = Dart_NewStringFromCString("dart:vmservice_io");
   Dart_Handle source = GetSource(name);
   return Dart_LoadScript(url, source, 0, 0);
 }
 
 
 Dart_Handle VmService::LoadSource(Dart_Handle library, const char* name) {
   Dart_Handle url = Dart_NewStringFromCString(name);
   Dart_Handle source = GetSource(name);
-  return Dart_LoadSource(library, url, source);
+  return Dart_LoadSource(library, url, source, 0, 0);
 }
 
 
 Dart_Handle VmService::LoadResource(Dart_Handle library,
                                     const char* resource_name,
                                     const char* prefix) {
   intptr_t prefix_len = strlen(prefix);
   // Prepare for invoke call.
   Dart_Handle name = Dart_NewStringFromCString(resource_name+prefix_len);
   RETURN_ERROR_HANDLE(name);
@@ skipping 72 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);
 }
 
 
 void VmService::ThreadMain(uword parameters) {
   ASSERT(Dart_CurrentIsolate() == NULL);
   Dart_Isolate service_isolate = Dart_GetServiceIsolate(NULL);
   Dart_EnterIsolate(service_isolate);
   Dart_EnterScope();
   Dart_Handle result = Dart_RunLoop();
   if (Dart_IsError(result)) {
     printf("Service exited with an error:\n%s\n", Dart_GetError(result));
   }
   Dart_ExitScope();
   Dart_ExitIsolate();
 }
 
 
 
 }  // namespace bin
 }  // namespace dart