requestAutocomplete (desktop): don't get stuck in infinite loop

chrome/browser/ui/cocoa/autofill/autofill_dialog_window_controller.mm

 // Copyright 2013 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.
 
 #import "chrome/browser/ui/cocoa/autofill/autofill_dialog_window_controller.h"
 
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/strings/sys_string_conversions.h"
 #include "chrome/browser/ui/autofill/autofill_dialog_view_delegate.h"
@@ skipping 385 matching lines @@
 - (void)fillSection:(autofill::DialogSection)section
             forType:(autofill::ServerFieldType)type {
   [[mainContainer_ sectionForId:section] fillForType:type];
   [mainContainer_ updateSaveInChrome];
 }
 
 - (void)updateForErrors {
   [mainContainer_ validate];
 }
 
-- (content::NavigationController*)showSignIn {
+- (content::NavigationController*)showSignIn:(const GURL&)url {
   [self updateSignInSizeConstraints];
   // Ensure |signInContainer_| is set to the same size as |mainContainer_|, to
   // force its minimum size so that there will not be a resize until the
   // contents are loaded.
   [[signInContainer_ view] setFrameSize:[[mainContainer_ view] frame].size];
-  [signInContainer_ loadSignInPage];
+  [signInContainer_ loadSignInPage:url];
 
   [[signInContainer_ view] setHidden:NO];
   [self updateMainContainerVisibility];
   [self requestRelayout];
 
   return [signInContainer_ navigationController];
 }
 
 - (void)getInputs:(autofill::FieldValueMap*)output
        forSection:(autofill::DialogSection)section {
@@ skipping 31 matching lines @@
 - (void)onSignInResize:(NSSize)size {
   [signInContainer_ setPreferredSize:size];
   [self requestRelayout];
 }
 
 - (void)validateSection:(autofill::DialogSection)section {
   [[mainContainer_ sectionForId:section] validateFor:autofill::VALIDATE_EDIT];
 }
 
 @end