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

components/printing/test/print_web_view_helper_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 "components/printing/renderer/print_web_view_helper.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <tuple>
@@ skipping 627 matching lines @@
   VerifyPreviewRequest(true);
 }
 
 TEST_F(MAYBE_PrintWebViewHelperPreviewTest, PrintWithJavaScript) {
   LoadHTML(kPrintOnUserAction);
   gfx::Size new_size(200, 100);
   Resize(new_size, false);
 
   gfx::Rect bounds = GetElementBounds("print");
   EXPECT_FALSE(bounds.IsEmpty());
-  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 = blink::WebMouseEvent::Button::Left;
   mouse_event.x = bounds.CenterPoint().x();
   mouse_event.y = bounds.CenterPoint().y();
   mouse_event.clickCount = 1;
   SendWebMouseEvent(mouse_event);
-  mouse_event.type = blink::WebInputEvent::MouseUp;
+  mouse_event.setType(blink::WebInputEvent::MouseUp);
   SendWebMouseEvent(mouse_event);
 
   VerifyPreviewRequest(true);
 }
 
 // Tests that print preview work and sending and receiving messages through
 // that channel all works.
 TEST_F(MAYBE_PrintWebViewHelperPreviewTest, OnPrintPreview) {
   LoadHTML(kHelloWorldHTML);
 
@@ skipping 393 matching lines @@
 
   VerifyPrintFailed(true);
   VerifyPagesPrinted(false);
 }
 #endif  // BUILDFLAG(ENABLE_BASIC_PRINTING)
 #endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW)
 
 #endif  // !defined(OS_CHROMEOS)
 
 }  // namespace printing