[3/3 blink] Support redirect option of Request and "opaqueredirect" response type.

Source/core/loader/DocumentThreadableLoader.cpp

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013, Intel Corporation
  *
  * 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.
@@ skipping 76 matching lines @@
     , m_forceDoNotAllowStoredCredentials(false)
     , m_securityOrigin(m_resourceLoaderOptions.securityOrigin)
     , m_sameOriginRequest(securityOrigin()->canRequestNoSuborigin(request.url()))
     , m_crossOriginNonSimpleRequest(false)
     , m_isUsingDataConsumerHandle(false)
     , m_async(blockingBehavior == LoadAsynchronously)
     , m_requestContext(request.requestContext())
     , m_timeoutTimer(this, &DocumentThreadableLoader::didTimeout)
     , m_requestStartedSeconds(0.0)
     , m_corsRedirectLimit(kMaxCORSRedirects)
+    , m_redirectMode(request.fetchRedirectMode())
 {
     ASSERT(client);
     // Setting an outgoing referer is only supported in the async code path.
     ASSERT(m_async || request.httpReferrer().isEmpty());
 
     if (!m_sameOriginRequest && m_options.crossOriginRequestPolicy == DenyCrossOriginRequests) {
         m_client->didFail(ResourceError(errorDomainBlinkInternal, 0, request.url().string(), "Cross origin requests are not supported."));
         return;
     }
 
@@ skipping 155 matching lines @@
 // to content::WebURLLoaderImpl. So, this loader must also get detached from
 // the resource by calling clearResource().
 void DocumentThreadableLoader::redirectReceived(Resource* resource, ResourceRequest& request, const ResourceResponse& redirectResponse)
 {
     ASSERT(m_client);
     ASSERT_UNUSED(resource, resource == this->resource());
     ASSERT(m_async);
 
     RefPtr<DocumentThreadableLoader> protect(this);
 
-    if (!isAllowedByContentSecurityPolicy(request.url(), ContentSecurityPolicy::DidRedirect)) {
+    if (m_redirectMode == WebURLRequest::FetchRedirectModeManual) {
+        responseReceived(resource, redirectResponse, nullptr);
+        clearResource();
+        request = ResourceRequest();
+        return;
+    }
+
+    if (m_redirectMode == WebURLRequest::FetchRedirectModeError || !isAllowedByContentSecurityPolicy(request.url(), ContentSecurityPolicy::DidRedirect)) {
         m_client->didFailRedirectCheck();
 
         clearResource();
         request = ResourceRequest();
 
         m_requestStartedSeconds = 0.0;
         return;
     }
 
     // Allow same origin requests to continue after allowing clients to audit the redirect.
@@ skipping 392 matching lines @@
         return DoNotAllowStoredCredentials;
     return m_resourceLoaderOptions.allowCredentials;
 }
 
 SecurityOrigin* DocumentThreadableLoader::securityOrigin() const
 {
     return m_securityOrigin ? m_securityOrigin.get() : m_document.securityOrigin();
 }
 
 } // namespace blink