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

third_party/WebKit/Source/web/WebAssociatedURLLoaderImpl.cpp

 /*
  * Copyright (C) 2010, 2011, 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 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/WebAssociatedURLLoaderImpl.h"
 
+#include <limits.h>
+#include <memory>
 #include "core/dom/ContextLifecycleObserver.h"
 #include "core/dom/TaskRunnerHelper.h"
 #include "core/loader/DocumentThreadableLoader.h"
 #include "core/loader/DocumentThreadableLoaderClient.h"
+#include "core/loader/ThreadableLoadingContext.h"
 #include "platform/Timer.h"
 #include "platform/exported/WrappedResourceRequest.h"
 #include "platform/exported/WrappedResourceResponse.h"
 #include "platform/loader/fetch/CrossOriginAccessControl.h"
 #include "platform/loader/fetch/FetchUtils.h"
 #include "platform/network/HTTPParsers.h"
 #include "platform/network/ResourceError.h"
 #include "public/platform/WebHTTPHeaderVisitor.h"
 #include "public/platform/WebString.h"
 #include "public/platform/WebURLError.h"
 #include "public/platform/WebURLRequest.h"
 #include "public/web/WebAssociatedURLLoaderClient.h"
 #include "public/web/WebDataSource.h"
 #include "web/WebLocalFrameImpl.h"
 #include "wtf/HashSet.h"
 #include "wtf/PtrUtil.h"
 #include "wtf/text/WTFString.h"
-#include <limits.h>
-#include <memory>
 
 namespace blink {
 
 namespace {
 
 class HTTPRequestHeaderValidator : public WebHTTPHeaderVisitor {
   WTF_MAKE_NONCOPYABLE(HTTPRequestHeaderValidator);
 
  public:
   HTTPRequestHeaderValidator() : m_isSafe(true) {}
@@ skipping 348 matching lines @@
       // FIXME: We load URLs without setting a TargetType (and therefore a
       // request context) in several places in content/
       // (P2PPortAllocatorSession::AllocateLegacyRelaySession, for example).
       // Remove this once those places are patched up.
       newRequest.setRequestContext(WebURLRequest::RequestContextInternal);
     }
 
     Document* document = toDocument(m_observer->lifecycleContext());
     DCHECK(document);
     m_loader = DocumentThreadableLoader::create(
-        *document, m_clientAdapter.get(), options, resourceLoaderOptions);
+        *ThreadableLoadingContext::create(*document), m_clientAdapter.get(),
+        options, resourceLoaderOptions);
     m_loader->start(webcoreRequest);
   }
 
   if (!m_loader) {
     // FIXME: return meaningful error codes.
     m_clientAdapter->didFail(ResourceError());
   }
   m_clientAdapter->enableErrorNotifications();
 }
 
@@ skipping 61 matching lines @@
   // there could be a WebURLLoader instance behind the
   // DocumentThreadableLoader instance. So, for safety, we chose to just
   // crash here.
   CHECK(ThreadState::current());
 
   m_observer->dispose();
   m_observer = nullptr;
 }
 
 }  // namespace blink