Fix Snow Leopard SDK errors

chrome/browser/autocomplete/autocomplete_edit_view_mac.mm

 // Copyright (c) 2009 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/autocomplete/autocomplete_edit_view_mac.h"
 
 #include <Carbon/Carbon.h>  // kVK_Return
 #include "app/gfx/font.h"
 #include "app/resource_bundle.h"
 #include "base/clipboard.h"
@@ skipping 139 matching lines @@
       controller_(controller),
       toolbar_model_(toolbar_model),
       command_updater_(command_updater),
       field_(field),
       edit_helper_([[AutocompleteFieldDelegate alloc] initWithEditView:this]) {
   DCHECK(controller);
   DCHECK(toolbar_model);
   DCHECK(profile);
   DCHECK(command_updater);
   DCHECK(field);
-  [field_ setDelegate:edit_helper_];
+  [field_ setDelegate:edit_helper_.get()];
 
   // Needed so that editing doesn't lose the styling.
   [field_ setAllowsEditingTextAttributes:YES];
 
   // Track the window's key status for signalling focus changes to
   // |model_|.
   NSNotificationCenter* nc = [NSNotificationCenter defaultCenter];
   [nc addObserver:edit_helper_
          selector:@selector(windowDidResignKey:)
              name:NSWindowDidResignKeyNotification
@@ skipping 676 matching lines @@
 // prepended and ".com" appended.  This calls down to
 // AutocompleteEditModel::OnControlKeyChanged() so that it can change
 // the popup to reflect this.  See autocomplete_edit.cc
 // OnControlKeyChanged() and OnAfterPossibleChange().
 - (void)control:(NSControl*)control flagsChanged:(NSEvent*)theEvent {
   bool controlFlag = ([theEvent modifierFlags]&NSControlKeyMask) != 0;
   edit_view_->OnControlKeyChanged(controlFlag);
 }
 
 @end