Plumb firing passive event listeners.

content/renderer/input/render_widget_input_handler_delegate.h

Index: content/renderer/input/render_widget_input_handler_delegate.h
diff --git a/content/renderer/input/render_widget_input_handler_delegate.h b/content/renderer/input/render_widget_input_handler_delegate.h
index d00a080aa4f05ff074b9e7be70ec271038e7dd75..7a7f54461815f04fd1136b914e080683ea1e427b 100644
--- a/content/renderer/input/render_widget_input_handler_delegate.h
+++ b/content/renderer/input/render_widget_input_handler_delegate.h
@@ -58,6 +58,11 @@ class CONTENT_EXPORT RenderWidgetInputHandlerDelegate {
   // Called when an ACK is ready to be sent to the input event provider.
   virtual void OnInputEventAck(scoped_ptr<InputEventAck> input_event_ack) = 0;
 
+  // Called when a non-blocking event (DISPATCH_TYPE_NON_BLOCKING) of
+  // |handled_type| has been processed by the main thread.
+  virtual void NonBlockingInputEventHandled(
+      blink::WebInputEvent::Type handled_type) = 0;
+
   // Notifies the delegate of the |input_handler| managing it.
   virtual void SetInputHandler(RenderWidgetInputHandler* input_handler) = 0;