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

chrome/browser/extensions/api/web_request/web_request_apitest.cc

Index: chrome/browser/extensions/api/web_request/web_request_apitest.cc
diff --git a/chrome/browser/extensions/api/web_request/web_request_apitest.cc b/chrome/browser/extensions/api/web_request/web_request_apitest.cc
index 102284e8876c6bd0896c9fde3d0348d59feb8919..b22bf14c7caeb9aed7bbc5cdb042f6e9401172f3 100644
--- a/chrome/browser/extensions/api/web_request/web_request_apitest.cc
+++ b/chrome/browser/extensions/api/web_request/web_request_apitest.cc
@@ -273,14 +273,15 @@ IN_PROC_BROWSER_TEST_F(ExtensionWebRequestApiTest, MAYBE_WebRequestNewTab) {
 
   // 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;
+  blink::WebMouseEvent mouse_event(blink::WebInputEvent::MouseDown,
+                                   blink::WebInputEvent::NoModifiers,
+                                   blink::WebInputEvent::TimeStampForTesting);
   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;
+  mouse_event.setType(blink::WebInputEvent::MouseUp);
   tab->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(mouse_event);
 
   ASSERT_TRUE(catcher.GetNextResult()) << catcher.message();