Reapply "Move isolate loading to a separate loader isolate."

Source/bindings/dart/DartUtilities.h

 // Copyright 2011, 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 153 matching lines @@
 
     static PassRefPtr<ScriptArguments> createScriptArguments(Dart_Handle argument, Dart_Handle& exception);
     static PassRefPtr<ScriptCallStack> createScriptCallStack();
 
     static Dart_WeakPersistentHandle createPrologueWeakPersistentHandle(Dart_Handle, void* peer, Dart_WeakPersistentHandleFinalizer);
 
     static void disposeWeakPersistentHandles();
 
     static const uint8_t* fullSnapshot(Frame*);
 
+    static Dart_Handle canonicalizeUrl(Dart_Handle library, Dart_Handle urlHandle, String url);
+
+    static void reportProblem(ScriptExecutionContext*, const String&);
     static void reportProblem(ScriptExecutionContext*, Dart_Handle);
     static void reportProblem(ScriptExecutionContext*, Dart_Handle, const String& sourceURL);
 
     static Dart_Handle invalidNumberOfArgumentsException()
     {
         return Dart_NewStringFromCString("Invalid number of arguments");
     }
 
     static Dart_Handle conditionalFunctionalityException()
     {
         return Dart_NewStringFromCString("Ooops, this functionality is not enabled in this browser");
     }
 
     static Dart_Handle notImplementedException(const char* fileName, int lineNumber);
 
     static Dart_Handle internalErrorException(const char* msg)
     {
         // FIXME: wrap into proper type.
         return Dart_NewStringFromCString(msg);
     }
 
     static Dart_Handle invokeUtilsMethod(const char* methodName, int argCount, Dart_Handle* args);
 
+    static Dart_Handle convertSourceString(const String& source)
+    {
+        // FIXME: Decide whether to externalize this here.
+        const CString utf8encoded = source.utf8();
+        return Dart_NewStringFromCString(utf8encoded.data());
+    }
+
     static DartStringAdapter dartToString(Dart_Handle object, Dart_Handle& exception)
     {
         // FIXME: [performance] need better treatment of String vs. AtomicString, cf. v8 implementation.
         intptr_t charsize = 0;
         intptr_t strlength = 0;
         void* peer = 0;
         Dart_Handle result = Dart_StringGetProperties(object, &charsize, &strlength, &peer);
         if (!Dart_IsError(result)) {
             if (peer) {
                 return DartStringAdapter(reinterpret_cast<StringImpl*>(peer));
@@ skipping 433 matching lines @@
     }
 };
 
 
 #define DART_UNIMPLEMENTED_EXCEPTION() DartUtilities::notImplementedException(__FILE__, __LINE__)
 #define DART_UNIMPLEMENTED() Dart_ThrowException(DART_UNIMPLEMENTED_EXCEPTION());
 
 } // namespace WebCore
 
 #endif // DartUtilities_h