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

content/browser/web_contents/web_contents_view_aura_browsertest.cc

Index: content/browser/web_contents/web_contents_view_aura_browsertest.cc
diff --git a/content/browser/web_contents/web_contents_view_aura_browsertest.cc b/content/browser/web_contents/web_contents_view_aura_browsertest.cc
index 99eb6f2be35bb9fbee2eda0430e8ca1cd46f5e99..fd4e3167a83c532eb0b917150d8af25b9d306813 100644
--- a/content/browser/web_contents/web_contents_view_aura_browsertest.cc
+++ b/content/browser/web_contents/web_contents_view_aura_browsertest.cc
@@ -43,6 +43,7 @@
 #include "ui/aura/window.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/compositor/scoped_animation_duration_scale_mode.h"
+#include "ui/events/base_event_utils.h"
 #include "ui/events/event_processor.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/test/event_generator.h"
@@ -986,8 +987,10 @@ IN_PROC_BROWSER_TEST_F(WebContentsViewAuraTest,
                                                             ui::LatencyInfo());
     WaitAFrame();
 
-    blink::WebGestureEvent scroll_end;
-    scroll_end.type = blink::WebInputEvent::GestureScrollEnd;
+    blink::WebGestureEvent scroll_end(
+        blink::WebInputEvent::GestureScrollEnd,
+        blink::WebInputEvent::NoModifiers,
+        ui::EventTimeStampToSeconds(ui::EventTimeForNow()));
     GetRenderWidgetHost()->ForwardGestureEventWithLatencyInfo(
         scroll_end, ui::LatencyInfo());
     WaitAFrame();