Refactoring button field and its type (2nd try)

chrome/browser/history/redirect_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.
 
 // Navigates the browser to server and client redirect pages and makes sure
 // that the correct redirects are reflected in the history database. Errors
 // here might indicate that WebKit changed the calls our glue layer gets in
 // the case of redirects. It may also mean problems with the history system.
 
 #include <memory>
@@ skipping 153 matching lines @@
 
   content::WebContents* web_contents =
       browser()->tab_strip_model()->GetActiveWebContents();
   content::TestNavigationObserver navigation_observer(web_contents);
 
   // Simulate a click to force to make a user-initiated location change;
   // otherwise, a non user-initiated in-page location change will be treated
   // as client redirect and the redirect will be recoreded, which can cause
   // this test failed.
   content::SimulateMouseClick(web_contents, 0,
-      blink::WebMouseEvent::ButtonLeft);
+      blink::WebMouseEvent::Button::Left);
   navigation_observer.Wait();
 
   std::vector<GURL> redirects = GetRedirects(first_url);
 
   // There should be no redirects from first_url, because the anchor location
   // change that occurs should not be flagged as a redirect and the meta-refresh
   // won't have fired yet.
   ASSERT_EQ(0U, redirects.size());
   EXPECT_EQ("myanchor", web_contents->GetURL().ref());
 }
@@ skipping 117 matching lines @@
   // as a client redirect from the first (/client-redirect?) page.
   for (std::vector<GURL>::iterator it = redirects.begin();
        it != redirects.end(); ++it) {
     if (final_url.spec() == it->spec()) {
       final_navigation_not_redirect = false;
       break;
     }
   }
   EXPECT_TRUE(final_navigation_not_redirect);
 }