Fix sizing issues in the tab modal signin flow.

chrome/browser/ui/cocoa/profiles/signin_view_controller_delegate_mac.mm

 // Copyright 2016 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/ui/cocoa/profiles/signin_view_controller_delegate_mac.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_avatar_icon_util.h"
 #include "chrome/browser/signin/signin_promo.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/cocoa/constrained_window/constrained_window_custom_sheet.h"
 #include "chrome/browser/ui/cocoa/constrained_window/constrained_window_custom_window.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/url_constants.h"
 #include "components/signin/core/common/profile_management_switches.h"
 #include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/web_contents.h"
 
 namespace {
 
 // Dimensions of the web contents containing the old-style signin flow with the
 // username and password challenge on the same form.
 const CGFloat kPasswordCombinedFixedGaiaViewHeight = 440;
 const CGFloat kPasswordCombinedFixedGaiaViewWidth = 360;
 
 // Dimensions of the tab-modal dialog displaying the password-separated signin
 // flow. These match the dimensions of the server content they display.
-const CGFloat kFixedGaiaViewHeight = 512;
+const CGFloat kFixedGaiaViewHeight = 612;
 const CGFloat kFixedGaiaViewWidth = 448;
 
 // Dimensions of the sync confirmation tab-modal dialog. These are taken from
 // the design spec for this feature.
 const int kSyncConfirmationDialogWidth = 448;
 const int kSyncConfirmationDialogHeight = 351;
 
 }  // namespace
 
 SigninViewControllerDelegateMac::SigninViewControllerDelegateMac(
@@ skipping 96 matching lines @@
     SigninViewController* signin_view_controller,
     Browser* browser) {
   return new SigninViewControllerDelegateMac(
       signin_view_controller,
       SigninViewControllerDelegateMac::CreateSyncConfirmationWebContents(
           browser->profile()),
       browser->tab_strip_model()->GetActiveWebContents(),
       NSMakeRect(0, 0, kSyncConfirmationDialogWidth,
                  kSyncConfirmationDialogHeight));
 }