Adding commandline switch and user pref for autofill server url.

chrome/browser/autofill/autofill_download.h

Index: chrome/browser/autofill/autofill_download.h
diff --git a/chrome/browser/autofill/autofill_download.h b/chrome/browser/autofill/autofill_download.h
index cb02e008fcced886e30469f91995ae47a6edaf8e..eea41e7827b210f46667dba953d01e8b2776c41a 100644
--- a/chrome/browser/autofill/autofill_download.h
+++ b/chrome/browser/autofill/autofill_download.h
@@ -18,6 +18,7 @@
 #include "chrome/browser/autofill/autofill_type.h"
 #include "net/url_request/url_fetcher_delegate.h"
 
+class AutofillDownloadUrl;
 class AutofillMetrics;
 class FormStructure;
 
@@ -137,6 +138,8 @@ class AutofillDownloadManager : public net::URLFetcherDelegate {
   // Must not be null.
   AutofillDownloadManager::Observer* const observer_;  // WEAK
 
+  scoped_ptr<AutofillDownloadUrl> autofill_download_url_;
+
   // For each requested form for both query and upload we create a separate
   // request and save its info. As url fetcher is identified by its address
   // we use a map between fetchers and info.