Refactoring button field and its type (2nd try)

chrome/browser/devtools/devtools_sanity_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 <memory>
 
 #include "base/bind.h"
 #include "base/cancelable_callback.h"
@@ skipping 1319 matching lines @@
   WebContents* web_contents = GetInspectedTab();
   OpenDevToolsWindow(kLatencyInfoTestPage, false);
   DispatchAndWait("startTimeline");
 
   for (int i = 0; i < 3; ++i) {
     SimulateMouseEvent(web_contents, blink::WebInputEvent::MouseMove,
                        gfx::Point(30, 60));
     DispatchInPageAndWait("waitForEvent", "mousemove");
   }
 
-  SimulateMouseClickAt(web_contents, 0, blink::WebPointerProperties::ButtonLeft,
+  SimulateMouseClickAt(web_contents, 0,
+                       blink::WebPointerProperties::Button::Left,
                        gfx::Point(30, 60));
   DispatchInPageAndWait("waitForEvent", "click");
 
   SimulateMouseWheelEvent(web_contents, gfx::Point(300, 100),
                           gfx::Vector2d(0, 120));
   DispatchInPageAndWait("waitForEvent", "wheel");
 
   SimulateTapAt(web_contents, gfx::Point(30, 60));
   DispatchInPageAndWait("waitForEvent", "gesturetap");
 
@@ skipping 88 matching lines @@
       DevToolsWindowTesting::OpenDevToolsWindowSync(GetInspectedTab(), true);
   chrome::DuplicateTab(browser());
   chrome::SelectPreviousTab(browser());
   ui_test_utils::NavigateToURL(browser(), GURL("about:blank"));
   chrome::GoBack(browser(), CURRENT_TAB);
   RunTestFunction(window, "testWindowInitializedOnNavigateBack");
 
   DevToolsWindowTesting::CloseDevToolsWindowSync(window);
   content::WebUIControllerFactory::UnregisterFactoryForTesting(&test_factory);
 }