Switch AutofillManager to be UserData on WebContents.

chrome/browser/autofill/autofill_external_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 "base/utf_string_conversions.h"
 #include "chrome/browser/autofill/autocomplete_history_manager.h"
 #include "chrome/browser/autofill/autofill_external_delegate.h"
 #include "chrome/browser/autofill/autofill_manager.h"
 #include "chrome/common/autofill_messages.h"
 #include "chrome/common/chrome_constants.h"
@@ skipping 92 matching lines @@
     // No suggestions, any popup currently showing is obsolete.
     HideAutofillPopup();
     return;
   }
 
   // Send to display.
   if (autofill_query_field_.is_focusable) {
     popup_visible_ = true;
     ApplyAutofillSuggestions(values, labels, icons, ids);
 
-    tab_contents_->autofill_manager()->OnDidShowAutofillSuggestions(
-        has_autofill_item && !has_shown_autofill_popup_for_current_edit_);
+    AutofillManager::FromWebContents(tab_contents_->web_contents())->
+        OnDidShowAutofillSuggestions(
+            has_autofill_item && !has_shown_autofill_popup_for_current_edit_);
     has_shown_autofill_popup_for_current_edit_ |= has_autofill_item;
   }
 }
 
 void AutofillExternalDelegate::OnShowPasswordSuggestions(
     const std::vector<string16>& suggestions,
     const FormFieldData& field,
     const gfx::Rect& bounds) {
   autofill_query_field_ = field;
 
@@ skipping 223 matching lines @@
 
 
 #if defined(OS_MACOSX)
 
 AutofillExternalDelegate* AutofillExternalDelegate::Create(
     TabContents*, AutofillManager*) {
   return NULL;
 }
 
 #endif