Refactoring button field and its type

chrome/browser/extensions/api/web_request/web_request_apitest.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/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/stringprintf.h"
 #include "build/build_config.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 219 matching lines @@
   const Extension* extension =
       service->GetExtensionById(last_loaded_extension_id(), false);
   GURL url = extension->GetResourceURL("newTab/a.html");
 
   ui_test_utils::NavigateToURL(browser(), url);
 
   // There's a link on a.html with target=_blank. Click on it to open it in a
   // new tab.
   blink::WebMouseEvent mouse_event;
   mouse_event.type = blink::WebInputEvent::MouseDown;
-  mouse_event.button = blink::WebMouseEvent::ButtonLeft;
+  mouse_event.button = blink::WebMouseEvent::Button::Left;
   mouse_event.x = 7;
   mouse_event.y = 7;
   mouse_event.clickCount = 1;
   tab->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(mouse_event);
   mouse_event.type = blink::WebInputEvent::MouseUp;
   tab->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(mouse_event);
 
   ASSERT_TRUE(catcher.GetNextResult()) << catcher.message();
 }
 
@@ skipping 321 matching lines @@
   ASSERT_TRUE(granter);
   granter->RevokeForTesting();
   base::RunLoop().RunUntilIdle();
   PerformXhrInPage(web_contents, kHost, port, kXhrPath);
   EXPECT_EQ(xhr_count,
             GetWebRequestCountFromBackgroundPage(extension, profile()));
   EXPECT_EQ(BLOCKED_ACTION_WEB_REQUEST, runner->GetBlockedActions(extension));
 }
 
 }  // namespace extensions