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

content/browser/renderer_host/input/web_input_event_util_unittest.cc

Index: content/browser/renderer_host/input/web_input_event_util_unittest.cc
diff --git a/content/browser/renderer_host/input/web_input_event_util_unittest.cc b/content/browser/renderer_host/input/web_input_event_util_unittest.cc
index 9dcc3157b7ec72a68b5c0161a11157e3d7c78598..6444f9e2a3123f0ca14f9f4a0465fd924a0905dd 100644
--- a/content/browser/renderer_host/input/web_input_event_util_unittest.cc
+++ b/content/browser/renderer_host/input/web_input_event_util_unittest.cc
@@ -49,12 +49,11 @@ TEST(WebInputEventUtilTest, MotionEventConversion) {
     event.set_flags(ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN);
     event.set_unique_event_id(123456U);
 
-    WebTouchEvent expected_event;
-    expected_event.type = WebInputEvent::TouchStart;
+    WebTouchEvent expected_event(
+        WebInputEvent::TouchStart,
+        WebInputEvent::ShiftKey | WebInputEvent::AltKey,
+        (event.GetEventTime() - base::TimeTicks()).InSecondsF());
     expected_event.touchesLength = 1;
-    expected_event.timeStampSeconds =
-        (event.GetEventTime() - base::TimeTicks()).InSecondsF();
-    expected_event.modifiers = WebInputEvent::ShiftKey | WebInputEvent::AltKey;
     WebTouchPoint expected_pointer;
     expected_pointer.id = pointer.id;
     expected_pointer.state = WebTouchPoint::StatePressed;