Pass line offsets to Dart_LoadLibrary and Dart_LoadSource.

Source/bindings/dart/DartAsyncLoader.h

 // Copyright 2013, 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 115 matching lines @@
     void process(const String& url, const String& source, intptr_t lineNumber);
     void fetchScriptResource(const String& url);
 
     // The main script has been processed. The top-level source and lineNumber are valid.
     bool mainScriptFetched() const { return m_mainScriptFetched; }
 
     // All dependences are available.
     bool ready() const { return mainScriptFetched() && m_pendingLibraries.isEmpty() && m_pendingSource.isEmpty() && !m_error; }
 
     void findDependences(const String& url, const String& source, intptr_t lineNumber);
-    void processLibrary(const String& url, const String& source);
-    void processSource(const String& url, const String& source);
+    void processLibrary(const String& url, const String& source, intptr_t lineNumber);
+    void processSource(const String& url, const String& source, intptr_t lineNumber);
     void reportError(Dart_Handle error, const String& url);
     void reportError(const String& error, const String& url);
     static Dart_Handle libraryTagHandlerCallback(Dart_LibraryTag, Dart_Handle library, Dart_Handle urlHandle);
 
     RefPtr<LoadCallback> m_loadCallback;
 
     typedef Vector<RefPtr<DartScriptInfo> > ScriptList;
     ScriptList m_scriptsToLoad;
     UrlSet m_pendingLibraries;
     UrlHandleMap m_pendingSource;
     bool m_mainScriptFetched;
     bool m_rootLoaded;
     KURL m_topUrl;
     bool m_error;
 
     // Private isolate for parsing and processing Dart files.
     Dart_Isolate m_isolate;
 
     friend class ScriptLoadedCallback;
 };
 
 }
 #endif // DartAsyncLoader_h