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

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

Index: third_party/WebKit/Source/web/tests/ChromeClientImplTest.cpp
diff --git a/third_party/WebKit/Source/web/tests/ChromeClientImplTest.cpp b/third_party/WebKit/Source/web/tests/ChromeClientImplTest.cpp
index 4ec36224379274c1bac80becec049e36eecdca39..50f0f3ec9c08e1bd2aeae11ca0d5a9341ca1fbd2 100644
--- a/third_party/WebKit/Source/web/tests/ChromeClientImplTest.cpp
+++ b/third_party/WebKit/Source/web/tests/ChromeClientImplTest.cpp
@@ -83,9 +83,8 @@ class GetNavigationPolicyTest : public testing::Test {
       int modifiers,
       WebMouseEvent::Button button,
       bool asPopup) {
-    WebMouseEvent event;
-    event.modifiers = modifiers;
-    event.type = WebInputEvent::MouseUp;
+    WebMouseEvent event(WebInputEvent::MouseUp, modifiers,
+                        WebInputEvent::TimeStampForTesting);
     event.button = button;
     setCurrentInputEventForTest(&event);
     m_chromeClientImpl->setScrollbarsVisible(!asPopup);