Update OS X to use scoped_refptr<T>::get() rather than implicit "operator T*"

chrome/browser/ui/cocoa/ssl_client_certificate_selector_cocoa.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/ssl_client_certificate_selector_cocoa.h"
 
 #import <SecurityInterface/SFChooseIdentityPanel.h>
 
 #include "base/logging.h"
 #include "base/mac/foundation_util.h"
@@ skipping 93 matching lines @@
 
 - (void)sheetDidEnd:(NSWindow*)parent
          returnCode:(NSInteger)returnCode
             context:(void*)context {
   net::X509Certificate* cert = NULL;
   if (returnCode == NSFileHandlingPanelOKButton) {
     CFRange range = CFRangeMake(0, CFArrayGetCount(identities_));
     CFIndex index =
         CFArrayGetFirstIndexOfValue(identities_, range, [panel_ identity]);
     if (index != -1)
-      cert = certificates_[index];
+      cert = certificates_[index].get();
     else
       NOTREACHED();
   }
 
   // Finally, tell the backend which identity (or none) the user selected.
   observer_->StopObserving();
   observer_->CertificateSelected(cert);
 
   if (!closePending_)
     constrainedWindow_->CloseWebContentsModalDialog();
@@ skipping 99 matching lines @@
   // NOOP
 }
 
 - (void)onConstrainedWindowClosed {
   panel_.reset();
   constrainedWindow_.reset();
   [self release];
 }
 
 @end