Use C++11 features in core/workers.

Source/core/workers/WorkerGlobalScope.cpp

Index: Source/core/workers/WorkerGlobalScope.cpp
diff --git a/Source/core/workers/WorkerGlobalScope.cpp b/Source/core/workers/WorkerGlobalScope.cpp
index b9d97fe844cd665052990fcc4efc74421528a5eb..acf32e4d50a0fd08e849e19755a8aace5612e4c0 100644
--- a/Source/core/workers/WorkerGlobalScope.cpp
+++ b/Source/core/workers/WorkerGlobalScope.cpp
@@ -222,12 +222,11 @@ void WorkerGlobalScope::importScripts(const Vector<String>& urls, ExceptionState
 
     ExecutionContext& executionContext = *this->executionContext();
 
-    Vector<String>::const_iterator urlsEnd = urls.end();
     Vector<KURL> completedURLs;
-    for (Vector<String>::const_iterator it = urls.begin(); it != urlsEnd; ++it) {
-        const KURL& url = executionContext.completeURL(*it);
+    for (const String& urlString : urls) {
+        const KURL& url = executionContext.completeURL(urlString);
         if (!url.isValid()) {
-            exceptionState.throwDOMException(SyntaxError, "The URL '" + *it + "' is invalid.");
+            exceptionState.throwDOMException(SyntaxError, "The URL '" + urlString + "' is invalid.");
             return;
         }
         if (!contentSecurityPolicy()->allowScriptFromSource(url)) {
@@ -236,16 +235,15 @@ void WorkerGlobalScope::importScripts(const Vector<String>& urls, ExceptionState
         }
         completedURLs.append(url);
     }
-    Vector<KURL>::const_iterator end = completedURLs.end();
 
-    for (Vector<KURL>::const_iterator it = completedURLs.begin(); it != end; ++it) {
+    for (const KURL& completeURL : completedURLs) {
         RefPtr<WorkerScriptLoader> scriptLoader(WorkerScriptLoader::create());
         scriptLoader->setRequestContext(blink::WebURLRequest::RequestContextScript);
-        scriptLoader->loadSynchronously(executionContext, *it, AllowCrossOriginRequests);
+        scriptLoader->loadSynchronously(executionContext, completeURL, AllowCrossOriginRequests);
 
         // If the fetching attempt failed, throw a NetworkError exception and abort all these steps.
         if (scriptLoader->failed()) {
-            exceptionState.throwDOMException(NetworkError, "The script at '" + it->elidedString() + "' failed to load.");
+            exceptionState.throwDOMException(NetworkError, "The script at '" + completeURL.elidedString() + "' failed to load.");
             return;
         }