Make ThreadableLoader class to use references

Source/core/workers/WorkerScriptLoader.cpp

Index: Source/core/workers/WorkerScriptLoader.cpp
diff --git a/Source/core/workers/WorkerScriptLoader.cpp b/Source/core/workers/WorkerScriptLoader.cpp
index ba33a8bca24cc0758143aa9a305e5f4c5ad7cdb6..d782acfea844d8afd45d633298314dfbad130c34 100644
--- a/Source/core/workers/WorkerScriptLoader.cpp
+++ b/Source/core/workers/WorkerScriptLoader.cpp
@@ -53,7 +53,7 @@ WorkerScriptLoader::~WorkerScriptLoader()
 {
 }
 
-void WorkerScriptLoader::loadSynchronously(ExecutionContext* executionContext, const KURL& url, CrossOriginRequestPolicy crossOriginRequestPolicy)
+void WorkerScriptLoader::loadSynchronously(ExecutionContext& executionContext, const KURL& url, CrossOriginRequestPolicy crossOriginRequestPolicy)
 {
     m_url = url;
 
@@ -61,7 +61,7 @@ void WorkerScriptLoader::loadSynchronously(ExecutionContext* executionContext, c
     if (!request)
         return;
 
-    ASSERT_WITH_SECURITY_IMPLICATION(executionContext->isWorkerGlobalScope());
+    ASSERT_WITH_SECURITY_IMPLICATION(executionContext.isWorkerGlobalScope());
 
     ThreadableLoaderOptions options;
     options.allowCredentials = AllowStoredCredentials;
@@ -72,7 +72,7 @@ void WorkerScriptLoader::loadSynchronously(ExecutionContext* executionContext, c
     WorkerThreadableLoader::loadResourceSynchronously(toWorkerGlobalScope(executionContext), *request, *this, options);
 }
 
-void WorkerScriptLoader::loadAsynchronously(ExecutionContext* executionContext, const KURL& url, CrossOriginRequestPolicy crossOriginRequestPolicy, WorkerScriptLoaderClient* client)
+void WorkerScriptLoader::loadAsynchronously(ExecutionContext& executionContext, const KURL& url, CrossOriginRequestPolicy crossOriginRequestPolicy, WorkerScriptLoaderClient* client)
 {
     ASSERT(client);
     m_client = client;