Cleanup dart to string conversions.

Source/WebCore/bindings/dart/DartApplicationLoader.cpp

 // Copyright (c) 2009, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
@@ skipping 106 matching lines @@
 Dart_Handle DartApplicationLoader::libraryTagHandlerCallback(Dart_LibraryTag tag, Dart_Handle library, Dart_Handle urlHandle)
 {
     ASSERT(currentApplicationLoader());
     return currentApplicationLoader()->libraryTagHandler(tag, library, urlHandle);
 }
 
 Dart_Handle DartApplicationLoader::libraryTagHandler(Dart_LibraryTag tag, Dart_Handle library, Dart_Handle urlHandle)
 {
     ASSERT(Dart_IsLibrary(library));
 
-    String url = DartUtilities::dartStringToString(urlHandle);
+    String url = DartUtilities::toString(urlHandle);
 
     Dart_Handle libraryURLHandle = Dart_LibraryUrl(library);
     ASSERT(!Dart_IsError(libraryURLHandle));
-    const String libraryURL = DartUtilities::dartStringToString(libraryURLHandle);
+    const String libraryURL = DartUtilities::toString(libraryURLHandle);
 
     if (tag == kCanonicalizeUrl) {
         if (url.startsWith("package:") && !url.startsWith("package://")) {
             // FIXME: Print warning on package:// URL. Package is
             // a Dart convention, not a real URI scheme.
             url = packageUrl(this, url);
         }
         const KURL canonical = KURL(KURL(KURL(), libraryURL), url);
         return DartUtilities::stringToDartString(canonical.string());
     }
@@ skipping 257 matching lines @@
     ASSERT(!isLoadingMainIsolate());
 
     // FIXME: propagate flags as well.
 
     ASSERT(m_sources.contains(m_libraryUrl));
     ASSERT(m_applicationLoaded);
     loadMainScript(m_libraryUrl, m_sources.get(m_libraryUrl));
 }
 
 }