Upstream rewrite of Instant.

chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.h"
 
 #include <string>
 
 #include "base/base64.h"
 #include "base/logging.h"
@@ skipping 216 matching lines @@
           child_id, route_id, prerender::FINAL_STATUS_AUTH_NEEDED)) {
     return true;
   }
 
   return false;
 }
 
 ResourceDispatcherHostLoginDelegate*
     ChromeResourceDispatcherHostDelegate::CreateLoginDelegate(
         net::AuthChallengeInfo* auth_info, net::URLRequest* request) {
-  std::string instant_header_value;
-  // For instant, return a NULL delegate. Auth navigations don't commit the load
-  // (the load remains pending) until the user cancels or succeeds in
-  // authorizing. Since we don't allow merging of WebContents with pending loads
-  // we disallow auth dialogs from showing during instant. Returning NULL does
-  // that.
-  // TODO: see if we can handle this case more robustly.
-  if (request->extra_request_headers().GetHeader(
-          InstantLoader::kInstantHeader, &instant_header_value) &&
-      instant_header_value == InstantLoader::kInstantHeaderValue)
-    return NULL;
   return CreateLoginPrompt(auth_info, request);
 }
 
 void ChromeResourceDispatcherHostDelegate::HandleExternalProtocol(
     const GURL& url, int child_id, int route_id) {
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       base::Bind(&ExternalProtocolHandler::LaunchUrl, url, child_id, route_id));
 }
 
@@ skipping 175 matching lines @@
   if (base::Base64Encode(serialized, &hashed)) {
     // If successful, swap the header value with the new one.
     // Note that the list of IDs and the header could be temporarily out of sync
     // if IDs are added as we are recreating the header, but we're OK with those
     // descrepancies.
     variation_ids_header_ = hashed;
   } else {
     DVLOG(1) << "Failed to base64 encode Variation IDs value: " << serialized;
   }
 }