bindings: Use Maybe APIs in V8ScriptRunner (part 1)

Source/bindings/core/v8/WorkerScriptController.cpp

Index: Source/bindings/core/v8/WorkerScriptController.cpp
diff --git a/Source/bindings/core/v8/WorkerScriptController.cpp b/Source/bindings/core/v8/WorkerScriptController.cpp
index 24e152f4ff6c18606a8196070d6db31f10e8fe67..cc077408ae9d4d8732487653905b53bcd38ecde5 100644
--- a/Source/bindings/core/v8/WorkerScriptController.cpp
+++ b/Source/bindings/core/v8/WorkerScriptController.cpp
@@ -184,8 +184,10 @@ ScriptValue WorkerScriptController::evaluate(const String& script, const 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::Local<v8::Value> result = V8ScriptRunner::runCompiledScript(isolate(), compiledScript, &m_workerGlobalScope);
+    v8::Local<v8::Script> compiledScript;
+    v8::MaybeLocal<v8::Value> maybeResult;
+    if (V8ScriptRunner::compileScript(scriptString, fileName, String(), scriptStartPosition, isolate(), nullptr, nullptr, cacheHandler, SharableCrossOrigin, v8CacheOptions).ToLocal(&compiledScript))
+        maybeResult = V8ScriptRunner::runCompiledScript(isolate(), compiledScript, &m_workerGlobalScope);
 
     if (!block.CanContinue()) {
         forbidExecution();
@@ -206,7 +208,8 @@ ScriptValue WorkerScriptController::evaluate(const String& script, const String&
         m_globalScopeExecutionState->hadException = false;
     }
 
-    if (result.IsEmpty() || result->IsUndefined())
+    v8::Local<v8::Value> result;
+    if (!maybeResult.ToLocal(&result) || result->IsUndefined())
         return ScriptValue();
 
     return ScriptValue(m_scriptState.get(), result);