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

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

Index: third_party/WebKit/Source/web/tests/BrowserControlsTest.cpp
diff --git a/third_party/WebKit/Source/web/tests/BrowserControlsTest.cpp b/third_party/WebKit/Source/web/tests/BrowserControlsTest.cpp
index d8099ba4cb9bb0046772912a21a8d6a4c27b6514..bf7505415de4481ec30a6bfd384c2a62ce470033 100644
--- a/third_party/WebKit/Source/web/tests/BrowserControlsTest.cpp
+++ b/third_party/WebKit/Source/web/tests/BrowserControlsTest.cpp
@@ -101,8 +101,8 @@ class BrowserControlsTest : public testing::Test {
   WebGestureEvent generateEvent(WebInputEvent::Type type,
                                 int deltaX = 0,
                                 int deltaY = 0) {
-    WebGestureEvent event;
-    event.type = type;
+    WebGestureEvent event(type, WebInputEvent::NoModifiers,
+                          WebInputEvent::TimeStampForTesting);
     event.sourceDevice = WebGestureDeviceTouchscreen;
     event.x = 100;
     event.y = 100;