[Mac] Make ConstrainedWebDialog resize with parent window

chrome/browser/ui/cocoa/constrained_window/constrained_window_web_dialog_sheet.h

Index: chrome/browser/ui/cocoa/constrained_window/constrained_window_web_dialog_sheet.h
diff --git a/chrome/browser/ui/cocoa/constrained_window/constrained_window_web_dialog_sheet.h b/chrome/browser/ui/cocoa/constrained_window/constrained_window_web_dialog_sheet.h
new file mode 100644
index 0000000000000000000000000000000000000000..57ba754af0e04215a799bda96a89013492e9b1b6
--- /dev/null
+++ b/chrome/browser/ui/cocoa/constrained_window/constrained_window_web_dialog_sheet.h
@@ -0,0 +1,25 @@
+// Copyright 2014 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_CONSTRAINED_WINDOW_CONSTRAINED_WINDOW_WEB_DIALOG_SHEET_H_
+#define CHROME_BROWSER_UI_COCOA_CONSTRAINED_WINDOW_CONSTRAINED_WINDOW_WEB_DIALOG_SHEET_H_
+
+#import "chrome/browser/ui/cocoa/constrained_window/constrained_window_custom_sheet.h"
+
+namespace ui {
+class WebDialogDelegate;
+}
+
+// Represents a custom sheet for web dialog.
+@interface WebDialogConstrainedWindowSheet : CustomConstrainedWindowSheet {
+ @private
+  ui::WebDialogDelegate* web_dialog_delegate_;  // Weak.
+}
+
+- (id)initWithCustomWindow:(NSWindow*)customWindow
+         webDialogDelegate:(ui::WebDialogDelegate*)delegate;
+
+@end
+
+#endif  // CHROME_BROWSER_UI_COCOA_CONSTRAINED_WINDOW_CONSTRAINED_WINDOW_WEB_DIALOG_SHEET_H_