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

third_party/WebKit/Source/web/tests/LinkSelectionTest.cpp

 // Copyright (c) 2016 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 "core/dom/Range.h"
 #include "core/frame/FrameView.h"
 #include "core/input/EventHandler.h"
 #include "core/page/ChromeClient.h"
 #include "core/page/ContextMenuController.h"
 #include "core/page/FocusController.h"
@@ skipping 74 matching lines @@
 }
 
 void LinkSelectionTestBase::emulateMouseClick(const IntPoint& clickPoint,
                                               WebMouseEvent::Button button,
                                               int modifiers,
                                               int count) {
   auto event = FrameTestHelpers::createMouseEvent(
       WebMouseEvent::MouseDown, button, clickPoint, modifiers);
   event.clickCount = count;
   m_webView->handleInputEvent(event);
-  event.type = WebMouseEvent::MouseUp;
+  event.setType(WebMouseEvent::MouseUp);
   m_webView->handleInputEvent(event);
 }
 
 void LinkSelectionTestBase::emulateMouseDown(const IntPoint& clickPoint,
                                              WebMouseEvent::Button button,
                                              int modifiers,
                                              int count) {
   auto event = FrameTestHelpers::createMouseEvent(
       WebMouseEvent::MouseDown, button, clickPoint, modifiers);
   event.clickCount = count;
@@ skipping 218 matching lines @@
     checkMouseClicks(*element, false);
   }
 
   {
     SCOPED_TRACE("Text div, double click");
     checkMouseClicks(*element, true);
   }
 }
 
 }  // namespace blink