[Reland] Enable AutoResize for Constrained Web Dialogs for Mac.

chrome/browser/ui/cocoa/ssl_client_certificate_selector_cocoa.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_SSL_CLIENT_CERTIFICATE_SELECTOR_COCOA_H_
 #define CHROME_BROWSER_UI_COCOA_SSL_CLIENT_CERTIFICATE_SELECTOR_COCOA_H_
 
 #import <Cocoa/Cocoa.h>
 #include <vector>
 
@@ skipping 17 matching lines @@
 @interface SSLClientCertificateSelectorCocoa
     : NSObject<ConstrainedWindowSheet> {
  @private
   // The list of identities offered to the user.
   base::ScopedCFTypeRef<CFMutableArrayRef> identities_;
   // The corresponding list of certificates.
   std::vector<scoped_refptr<net::X509Certificate> > certificates_;
   // A C++ object to bridge SSLClientAuthObserver notifications to us.
   scoped_ptr<SSLClientAuthObserverCocoaBridge> observer_;
   base::scoped_nsobject<SFChooseIdentityPanel> panel_;
-  scoped_ptr<ConstrainedWindowMac> constrainedWindow_;
+  std::unique_ptr<ConstrainedWindowMac> constrainedWindow_;
   base::scoped_nsobject<NSWindow> overlayWindow_;
   BOOL closePending_;
   // A copy of the sheet's frame used to restore on show.
   NSRect oldSheetFrame_;
   // A copy of the sheet's |autoresizesSubviews| flag to restore on show.
   BOOL oldResizesSubviews_;
   // True if the user dismissed the dialog directly, either via the OK (continue
   // the request with a certificate) or Cancel (continue the request with no
   // certificate) buttons.
   BOOL userResponded_;
 }
 
 @property (readonly, nonatomic) SFChooseIdentityPanel* panel;
 
 - (id)initWithBrowserContext:(const content::BrowserContext*)browserContext
              certRequestInfo:(net::SSLCertRequestInfo*)certRequestInfo
                     delegate:(scoped_ptr<content::ClientCertificateDelegate>)
                                  delegate;
 - (void)displayForWebContents:(content::WebContents*)webContents;
 - (void)closeWebContentsModalDialog;
 
 - (NSWindow*)overlayWindow;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_SSL_CLIENT_CERTIFICATE_SELECTOR_COCOA_H_