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

content/browser/renderer_host/input/touch_emulator.h

Index: content/browser/renderer_host/input/touch_emulator.h
diff --git a/content/browser/renderer_host/input/touch_emulator.h b/content/browser/renderer_host/input/touch_emulator.h
index 6baee6e95c5f501652db5e870fe3a7a4acb2a281..abd0514ba13106f9564f5f2f364feb684ab02ae2 100644
--- a/content/browser/renderer_host/input/touch_emulator.h
+++ b/content/browser/renderer_host/input/touch_emulator.h
@@ -69,7 +69,9 @@ class CONTENT_EXPORT TouchEmulator : public ui::GestureProviderClient {
   bool InPinchGestureMode() const;
 
   void FillTouchEventAndPoint(const blink::WebMouseEvent& mouse_event);
-  void FillPinchEvent(const blink::WebInputEvent& event);
+  blink::WebGestureEvent GetPinchGestureEvent(
+      blink::WebInputEvent::Type type,
+      const blink::WebInputEvent& original_event);
 
   // The following methods generate and pass gesture events to the renderer.
   void PinchBegin(const blink::WebGestureEvent& event);
@@ -114,7 +116,6 @@ class CONTENT_EXPORT TouchEmulator : public ui::GestureProviderClient {
   // did not send fling start in pinch mode.
   bool suppress_next_fling_cancel_;
 
-  blink::WebGestureEvent pinch_event_;
   // Point which does not move while pinch-zooming.
   gfx::Point pinch_anchor_;
   // The cumulative scale change from the start of pinch gesture.