Add constructors to WebInputEvents and setters so we can work at cleaning up these public structs.

chrome/browser/referrer_policy_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/bind.h"
 #include "base/command_line.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 159 matching lines @@
     content::WebContents* tab =
         browser()->tab_strip_model()->GetActiveWebContents();
     content::TitleWatcher title_watcher(tab, expected_title);
 
     // Watch for all possible outcomes to avoid timeouts if something breaks.
     AddAllPossibleTitles(start_url, &title_watcher);
 
     ui_test_utils::NavigateToURL(browser(), start_url);
 
     if (button != blink::WebMouseEvent::Button::NoButton) {
-      blink::WebMouseEvent mouse_event;
-      mouse_event.type = blink::WebInputEvent::MouseDown;
+      blink::WebMouseEvent mouse_event(
+          blink::WebInputEvent::MouseDown, blink::WebInputEvent::NoModifiers,
+          blink::WebInputEvent::TimeStampForTesting);
       mouse_event.button = button;
       mouse_event.x = 15;
       mouse_event.y = 15;
       mouse_event.clickCount = 1;
       tab->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(mouse_event);
-      mouse_event.type = blink::WebInputEvent::MouseUp;
+      mouse_event.setType(blink::WebInputEvent::MouseUp);
       tab->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(mouse_event);
     }
 
     if (disposition == WindowOpenDisposition::CURRENT_TAB) {
       EXPECT_EQ(expected_title, title_watcher.WaitAndGetTitle());
     } else {
       tab_added_observer.Wait();
       tab = tab_added_observer.GetTab();
       EXPECT_TRUE(tab);
       content::TitleWatcher title_watcher2(tab, expected_title);
@@ skipping 415 matching lines @@
                        HttpLeftClickRedirectDefaultFlag) {
   blink::WebReferrerPolicy expected_referrer_policy =
       blink::WebReferrerPolicyNoReferrerWhenDowngradeOriginWhenCrossOrigin;
 
   RunReferrerTest(blink::WebReferrerPolicyDefault, START_ON_HTTP, REGULAR_LINK,
                   SERVER_REDIRECT_FROM_HTTP_TO_HTTPS,
                   WindowOpenDisposition::CURRENT_TAB,
                   blink::WebMouseEvent::Button::Left, EXPECT_ORIGIN_AS_REFERRER,
                   expected_referrer_policy);
 }