Convert WindowOpenDisposition to an enum class.

chrome/browser/ui/omnibox/omnibox_view_browsertest.cc

 // 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 <stddef.h>
 #include <stdio.h>
 
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/scoped_observer.h"
@@ skipping 674 matching lines @@
 
   // Create another tab in the foreground.
   AddTabAtIndex(1, url1, ui::PAGE_TRANSITION_TYPED);
   EXPECT_EQ(2, browser()->tab_strip_model()->count());
   EXPECT_EQ(1, browser()->tab_strip_model()->active_index());
 
   // Navigate in the first tab, currently in the background.
   GURL url2("data:text/html,page2");
   chrome::NavigateParams params(browser(), url2, ui::PAGE_TRANSITION_LINK);
   params.source_contents = contents;
-  params.disposition = CURRENT_TAB;
+  params.disposition = WindowOpenDisposition::CURRENT_TAB;
   ui_test_utils::NavigateToURL(&params);
 
   // Switch back to the first tab.  The user text should be cleared, and the
   // omnibox should have the new URL.
   browser()->tab_strip_model()->ActivateTabAt(0, true);
   EXPECT_EQ(ASCIIToUTF16(url2.spec()), omnibox_view->GetText());
 }
 
 IN_PROC_BROWSER_TEST_F(OmniboxViewTest, AltEnter) {
   OmniboxView* omnibox_view = NULL;
@@ skipping 1282 matching lines @@
 
   // Now Shift+Right should do nothing, and Shift+Left should reduce.
   // At the end, so Shift+Right should do nothing.
   ASSERT_NO_FATAL_FAILURE(SendKey(ui::VKEY_RIGHT, ui::EF_SHIFT_DOWN));
   EXPECT_EQ(2u, GetSelectionSize(omnibox_view));
 
   // And Left should reduce by one character.
   ASSERT_NO_FATAL_FAILURE(SendKey(ui::VKEY_LEFT, ui::EF_SHIFT_DOWN));
   EXPECT_EQ(1u, GetSelectionSize(omnibox_view));
 }