Collapse the API surface on WebInputEvent via accessor functions.

components/guest_view/browser/guest_view_base.cc

Index: components/guest_view/browser/guest_view_base.cc
diff --git a/components/guest_view/browser/guest_view_base.cc b/components/guest_view/browser/guest_view_base.cc
index 2d52bbf4fc3c42241a21b0fc4d18554e4cd86214..98a25805dc97d27858a0ebb3f605932eb938f0e4 100644
--- a/components/guest_view/browser/guest_view_base.cc
+++ b/components/guest_view/browser/guest_view_base.cc
@@ -689,9 +689,9 @@ bool GuestViewBase::ShouldFocusPageAfterCrash() {
 
 bool GuestViewBase::PreHandleGestureEvent(WebContents* source,
                                           const blink::WebGestureEvent& event) {
-  return event.type == blink::WebGestureEvent::GesturePinchBegin ||
-      event.type == blink::WebGestureEvent::GesturePinchUpdate ||
-      event.type == blink::WebGestureEvent::GesturePinchEnd;
+  return event.type() == blink::WebGestureEvent::GesturePinchBegin ||
+         event.type() == blink::WebGestureEvent::GesturePinchUpdate ||
+         event.type() == blink::WebGestureEvent::GesturePinchEnd;
 }
 
 void GuestViewBase::UpdatePreferredSize(WebContents* target_web_contents,