iwyu: Cleanup in the following files:

chrome/browser/autofill/autofill_download.cc

 // Copyright (c) 2011 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/autofill/autofill_download.h"
 
 #include <algorithm>
+#include <ostream>
 #include <vector>
 
 #include "base/logging.h"
 #include "base/rand_util.h"
 #include "base/stl_util-inl.h"
+#include "base/string_util.h"
 #include "chrome/browser/autofill/autofill_metrics.h"
 #include "chrome/browser/autofill/autofill_xml_parser.h"
+#include "chrome/browser/autofill/form_structure.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/pref_names.h"
+#include "googleurl/src/gurl.h"
 #include "net/http/http_response_headers.h"
+#include "third_party/libjingle/source/talk/xmllite/xmlparser.h"
 
 #define AUTO_FILL_QUERY_SERVER_REQUEST_URL \
     "http://toolbarqueries.clients.google.com:80/tbproxy/af/query"
 #define AUTO_FILL_UPLOAD_SERVER_REQUEST_URL \
     "http://toolbarqueries.clients.google.com:80/tbproxy/af/upload"
 #define AUTO_FILL_QUERY_SERVER_NAME_START_IN_HEADER "GFE/"
 
 namespace {
 const size_t kMaxFormCacheSize = 16;
 };
@@ skipping 254 matching lines @@
     bool back_off = false;
     std::string server_header;
     switch (response_code) {
       case kHttpBadGateway:
         if (!source->response_headers()->EnumerateHeader(NULL, "server",
                                                          &server_header) ||
             StartsWithASCII(server_header.c_str(),
                             AUTO_FILL_QUERY_SERVER_NAME_START_IN_HEADER,
                             false) != 0)
           break;
-        // Bad getaway was received from Autofill servers. Fall through to back
+        // Bad gateway was received from Autofill servers. Fall through to back
         // off.
       case kHttpInternalServerError:
       case kHttpServiceUnavailable:
         back_off = true;
         break;
     }
 
     if (back_off) {
       base::Time back_off_time(base::Time::Now() + source->backoff_delay());
       if (it->second.request_type == AutofillDownloadManager::REQUEST_QUERY) {
@@ skipping 29 matching lines @@
         SetNegativeUploadRate(new_negative_upload_rate);
       }
 
       if (observer_)
         observer_->OnUploadedAutofillHeuristics(it->second.form_signatures[0]);
     }
   }
   delete it->first;
   url_fetchers_.erase(it);
 }