Cleanly handle excessively long JS source strings.

Source/bindings/core/v8/WorkerScriptController.cpp

 /*
  * Copyright (C) 2009, 2012 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 165 matching lines @@
     ScriptState::Scope scope(m_scriptState.get());
 
     if (!m_disableEvalPending.isEmpty()) {
         m_scriptState->context()->AllowCodeGenerationFromStrings(false);
         m_scriptState->context()->SetErrorMessageForCodeGenerationFromStrings(v8String(isolate(), m_disableEvalPending));
         m_disableEvalPending = String();
     }
 
     v8::TryCatch block;
 
-    v8::Handle<v8::String> scriptString = v8String(isolate(), script);
-    v8::Handle<v8::Script> compiledScript = V8ScriptRunner::compileScript(scriptString, fileName, String(), scriptStartPosition, isolate(), nullptr, nullptr, cacheHandler, SharableCrossOrigin, v8CacheOptions);
+    v8::Handle<v8::Script> compiledScript = V8ScriptRunner::compileScript(script, fileName, String(), scriptStartPosition, isolate(), cacheHandler, SharableCrossOrigin, v8CacheOptions);
     v8::Local<v8::Value> result = V8ScriptRunner::runCompiledScript(isolate(), compiledScript, &m_workerGlobalScope);
 
     if (!block.CanContinue()) {
         forbidExecution();
         return ScriptValue();
     }
 
     if (block.HasCaught()) {
         v8::Local<v8::Message> message = block.Message();
         m_globalScopeExecutionState->hadException = true;
@@ skipping 84 matching lines @@
 
 void WorkerScriptController::rethrowExceptionFromImportedScript(PassRefPtrWillBeRawPtr<ErrorEvent> errorEvent, ExceptionState& exceptionState)
 {
     const String& errorMessage = errorEvent->message();
     if (m_globalScopeExecutionState)
         m_globalScopeExecutionState->m_errorEventFromImportedScript = errorEvent;
     exceptionState.rethrowV8Exception(V8ThrowException::createGeneralError(isolate(), errorMessage));
 }
 
 } // namespace blink