Forward GenericMotionEvent to EventForwarder

ui/android/view_android.h

Index: ui/android/view_android.h
diff --git a/ui/android/view_android.h b/ui/android/view_android.h
index 18bd14094d927764f1bd79c0cecd5b1df3981468..a56603f07918aca97593093b27d079f549fe75be 100644
--- a/ui/android/view_android.h
+++ b/ui/android/view_android.h
@@ -163,6 +163,7 @@ class UI_ANDROID_EXPORT ViewAndroid {
 
   bool OnTouchEvent(const MotionEventAndroid& event, bool for_touch_handle);
   bool OnMouseEvent(const MotionEventAndroid& event);
+  bool OnMouseWheelEvent(const MotionEventAndroid& event);
 
   void RemoveChild(ViewAndroid* child);
 
@@ -174,6 +175,8 @@ class UI_ANDROID_EXPORT ViewAndroid {
                                      const MotionEventAndroid& event);
   static bool SendMouseEventToClient(ViewClient* client,
                                      const MotionEventAndroid& event);
+  static bool SendMouseWheelEventToClient(ViewClient* client,
+                                          const MotionEventAndroid& event);
 
   bool has_event_forwarder() const { return !!event_forwarder_; }