MacViews: Unify web contents modal dialog types

chrome/browser/ui/cocoa/constrained_window/constrained_window_sheet_controller_unittest.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/constrained_window/constrained_window_sheet_controller.h"
 
 #import "chrome/browser/ui/cocoa/cocoa_test_helper.h"
 #import "chrome/browser/ui/cocoa/constrained_window/constrained_window_custom_sheet.h"
 #import "testing/gtest_mac.h"
 
@@ skipping 38 matching lines @@
 
 - (void)pulseSheet {
 }
 
 - (void)makeSheetKeyAndOrderFront {
 }
 
 - (void)updateSheetPosition {
 }
 
+- (NSWindow*)sheetWindow {
+  return [alert_ window];
+}
+
 - (void)alertDidEnd:(NSAlert *)alert
          returnCode:(NSInteger)returnCode
             ctxInfo:(void *)contextInfo {
   returnCode_ = returnCode;
 }
 
 @end
 
 class ConstrainedWindowSheetControllerTest : public CocoaTest {
  protected:
@@ skipping 236 matching lines @@
   EXPECT_FALSE([[alert window] isVisible]);
   [controller_ showSheet:system_sheet forParentView:tab1_];
   EXPECT_FALSE([[alert window] isVisible]);
 
   ActivateTabView(tab1_);
   EXPECT_TRUE([[alert window] isVisible]);
   EXPECT_EQ(1.0, [[alert window] alphaValue]);
 
   [controller_ closeSheet:system_sheet];
 }