Introduce ThreadableLoadingContext: make threaded loading code one step away from Document

third_party/WebKit/Source/web/WebSharedWorkerImpl.cpp

 /*
  * Copyright (C) 2009 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 12 matching lines @@
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "web/WebSharedWorkerImpl.h"
 
+#include <memory>
 #include "core/dom/Document.h"
 #include "core/events/MessageEvent.h"
 #include "core/inspector/ConsoleMessage.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/loader/FrameLoadRequest.h"
 #include "core/loader/FrameLoader.h"
+#include "core/loader/ThreadableLoadingContext.h"
 #include "core/workers/ParentFrameTaskRunners.h"
 #include "core/workers/SharedWorkerGlobalScope.h"
 #include "core/workers/SharedWorkerThread.h"
 #include "core/workers/WorkerClients.h"
 #include "core/workers/WorkerGlobalScope.h"
 #include "core/workers/WorkerInspectorProxy.h"
 #include "core/workers/WorkerLoaderProxy.h"
 #include "core/workers/WorkerScriptLoader.h"
 #include "core/workers/WorkerThreadStartupData.h"
 #include "platform/CrossThreadFunctional.h"
@@ skipping 14 matching lines @@
 #include "public/web/WebView.h"
 #include "public/web/WebWorkerContentSettingsClientProxy.h"
 #include "public/web/modules/serviceworker/WebServiceWorkerNetworkProvider.h"
 #include "web/IndexedDBClientImpl.h"
 #include "web/LocalFileSystemClient.h"
 #include "web/WebDataSourceImpl.h"
 #include "web/WebLocalFrameImpl.h"
 #include "web/WorkerContentSettingsClient.h"
 #include "wtf/Functional.h"
 #include "wtf/PtrUtil.h"
-#include <memory>
 
 namespace blink {
 
 // TODO(toyoshim): Share implementation with WebEmbeddedWorkerImpl as much as
 // possible.
 
 WebSharedWorkerImpl::WebSharedWorkerImpl(WebSharedWorkerClient* client)
     : m_webView(nullptr),
       m_mainFrame(nullptr),
       m_askedToTerminate(false),
@@ skipping 185 matching lines @@
       ->postTask(FROM_HERE, std::move(task));
 }
 
 void WebSharedWorkerImpl::postTaskToWorkerGlobalScope(
     const WebTraceLocation& location,
     std::unique_ptr<WTF::CrossThreadClosure> task) {
   DCHECK(isMainThread());
   m_workerThread->postTask(location, std::move(task));
 }
 
-ExecutionContext* WebSharedWorkerImpl::getLoaderExecutionContext() {
-  DCHECK(isMainThread());
-  return m_loadingDocument.get();
+ThreadableLoadingContext* WebSharedWorkerImpl::getThreadableLoadingContext() {
+  if (!m_loadingContext) {
+    m_loadingContext =
+        ThreadableLoadingContext::create(*toDocument(m_loadingDocument.get()));
+  }
+  return m_loadingContext;
 }
 
 void WebSharedWorkerImpl::connect(WebMessagePortChannel* webChannel) {
   DCHECK(isMainThread());
   workerThread()->postTask(
       BLINK_FROM_HERE,
       crossThreadBind(&WebSharedWorkerImpl::connectTaskOnWorkerThread,
                       WTF::crossThreadUnretained(this),
                       WTF::passed(WebMessagePortChannelUniquePtr(webChannel))));
 }
@@ skipping 144 matching lines @@
   if (devtoolsAgent)
     devtoolsAgent->dispatchOnInspectorBackend(sessionId, callId, method,
                                               message);
 }
 
 WebSharedWorker* WebSharedWorker::create(WebSharedWorkerClient* client) {
   return new WebSharedWorkerImpl(client);
 }
 
 }  // namespace blink