Convert WindowOpenDisposition to an enum class.

chrome/test/gpu/webgl_infobar_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 "base/command_line.h"
 #include "base/path_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/infobars/infobar_service.h"
@@ skipping 27 matching lines @@
   // do here: navigate with the PAGE_TRANSITION_FROM_ADDRESS_BAR flag,
   // without waiting for the navigation. It would be painful to change
   // either of the NavigateToURL entry points to support these two
   // constraints, so we use chrome::Navigate directly.
   chrome::NavigateParams params(
       browser,
       GURL(content::kChromeUIGpuCrashURL),
       ui::PageTransitionFromInt(
           ui::PAGE_TRANSITION_TYPED |
           ui::PAGE_TRANSITION_FROM_ADDRESS_BAR));
-  params.disposition = NEW_BACKGROUND_TAB;
+  params.disposition = WindowOpenDisposition::NEW_BACKGROUND_TAB;
   chrome::Navigate(&params);
 }
 
 }  // namespace
 
 class WebGLInfoBarTest : public InProcessBrowserTest {
  protected:
   void SetUpInProcessBrowserTestFixture() override {
     base::FilePath test_dir;
     ASSERT_TRUE(PathService::Get(content::DIR_TEST_DATA, &test_dir));
@@ skipping 69 matching lines @@
   // The page should reload and another message sent to the
   // DomAutomationController.
   m.clear();
   ASSERT_TRUE(message_queue.WaitForMessage(&m));
   EXPECT_EQ("\"LOADED\"", m);
 }
 
 // There isn't any point in adding a test which calls Accept() on the
 // ThreeDAPIInfoBarDelegate; doing so doesn't remove the infobar, and
 // there's no concrete event that could be observed in response.