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

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 <stddef.h>
 
 #include <utility>
@@ skipping 161 matching lines @@
   panel_.reset([[SFChooseIdentityPanel alloc] init]);
   [panel_ setInformativeText:message];
   [panel_ setDefaultButtonTitle:l10n_util::GetNSString(IDS_OK)];
   [panel_ setAlternateButtonTitle:l10n_util::GetNSString(IDS_CANCEL)];
   SecPolicyRef sslPolicy;
   if (net::x509_util::CreateSSLClientPolicy(&sslPolicy) == noErr) {
     [panel_ setPolicies:(id)sslPolicy];
     CFRelease(sslPolicy);
   }
 
-  constrainedWindow_.reset(
-      new ConstrainedWindowMac(observer_.get(), webContents, self));
+  constrainedWindow_ =
+      CreateAndShowWebModalDialogMac(observer_.get(), webContents, self);
   observer_->StartObserving();
 }
 
 - (void)closeWebContentsModalDialog {
   DCHECK(constrainedWindow_);
   constrainedWindow_->CloseWebContentsModalDialog();
 }
 
 - (NSWindow*)overlayWindow {
   return overlayWindow_;
@@ skipping 59 matching lines @@
 }
 
 - (void)makeSheetKeyAndOrderFront {
   [[overlayWindow_ attachedSheet] makeKeyAndOrderFront:nil];
 }
 
 - (void)updateSheetPosition {
   // NOOP
 }
 
+- (void)resizeWithNewSize:(NSSize)size {
+  // NOOP
+}
+
 - (NSWindow*)sheetWindow {
   return panel_;
 }
 
 - (void)onConstrainedWindowClosed {
   observer_->StopObserving();
   panel_.reset();
   constrainedWindow_.reset();
   [self release];
 }
 
 @end