[Mac] Make ConstrainedWebDialog resize with parent window

chrome/browser/ui/cocoa/constrained_web_dialog_delegate_mac.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.
 
 #include "chrome/browser/ui/webui/constrained_web_dialog_delegate_base.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/scoped_nsobject.h"
-#import "chrome/browser/ui/cocoa/constrained_window/constrained_window_custom_sheet.h"
+#import "chrome/browser/ui/cocoa/constrained_window/constrained_window_web_dialog_sheet.h"
 #import "chrome/browser/ui/cocoa/constrained_window/constrained_window_custom_window.h"
 #import "chrome/browser/ui/cocoa/constrained_window/constrained_window_mac.h"
 #include "content/public/browser/web_contents.h"
 #include "ui/gfx/size.h"
 #include "ui/web_dialogs/web_dialog_delegate.h"
 #include "ui/web_dialogs/web_dialog_ui.h"
 #include "ui/web_dialogs/web_dialog_web_contents_delegate.h"
 
 using content::WebContents;
 using ui::WebDialogDelegate;
@@ skipping 89 matching lines @@
     content::WebContents* web_contents)
     : impl_(new ConstrainedWebDialogDelegateMac(browser_context, delegate)) {
   // Create a window to hold web_contents in the constrained sheet:
   gfx::Size size;
   delegate->GetDialogSize(&size);
   NSRect frame = NSMakeRect(0, 0, size.width(), size.height());
 
   window_.reset(
       [[ConstrainedWindowCustomWindow alloc] initWithContentRect:frame]);
   [GetWebContents()->GetNativeView() setFrame:frame];
+  [GetWebContents()->GetNativeView() setAutoresizingMask:
+      NSViewWidthSizable|NSViewHeightSizable];
   [[window_ contentView] addSubview:GetWebContents()->GetNativeView()];
 
-  base::scoped_nsobject<CustomConstrainedWindowSheet> sheet(
-      [[CustomConstrainedWindowSheet alloc] initWithCustomWindow:window_]);
+  base::scoped_nsobject<WebDialogConstrainedWindowSheet> sheet(
+      [[WebDialogConstrainedWindowSheet alloc] initWithCustomWindow:window_
+                                                  webDialogDelegate:delegate]);
   constrained_window_.reset(new ConstrainedWindowMac(
       this, web_contents, sheet));
 
   impl_->set_window(constrained_window_.get());
 }
 
 ConstrainedWebDialogDelegate* ShowConstrainedWebDialog(
         content::BrowserContext* browser_context,
         WebDialogDelegate* delegate,
         content::WebContents* web_contents) {
   // Deleted when the dialog closes.
   ConstrainedWebDialogDelegateViewMac* constrained_delegate =
       new ConstrainedWebDialogDelegateViewMac(
           browser_context, delegate, web_contents);
   return constrained_delegate;
 }