Fix Hiding Issue with Certificate Viewer Mac

chrome/browser/ui/cocoa/certificate_viewer_mac.h

 // Copyright (c) 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_CERTIFICATE_VIEWER_MAC_H_
 
 #define CHROME_BROWSER_UI_COCOA_CERTIFICATE_VIEWER_MAC_H_
 
 #include <memory>
 
@@ skipping 12 matching lines @@
  @private
   // The corresponding list of certificates.
   base::scoped_nsobject<NSArray> certificates_;
   std::unique_ptr<SSLCertificateViewerCocoaBridge> observer_;
   base::scoped_nsobject<SFCertificatePanel> panel_;
   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 overlay window's size used to restore on show.
+  NSSize oldOverlaySize_;
   // A copy of the sheet's |autoresizesSubviews| flag to restore on show.
   BOOL oldResizesSubviews_;
 }
 
 - (id)initWithCertificate:(net::X509Certificate*)certificate;
 
 - (void)displayForWebContents:(content::WebContents*)webContents;
 
 - (NSWindow*)overlayWindow;
 
 @end
 
 #endif // CHROME_BROWSER_UI_COCOA_CERTIFICATE_VIEWER_MAC_H_