client-side wheel mouse support

remoting/client/plugin/chromoting_instance.cc

Index: remoting/client/plugin/chromoting_instance.cc
diff --git a/remoting/client/plugin/chromoting_instance.cc b/remoting/client/plugin/chromoting_instance.cc
index 09dbc48a54275f7c7445ea7852037b090e5cc859..5b99d6df7e84f9304fb36e2eba6edb2b86a06f45 100644
--- a/remoting/client/plugin/chromoting_instance.cc
+++ b/remoting/client/plugin/chromoting_instance.cc
@@ -206,6 +206,10 @@ bool ChromotingInstance::HandleInputEvent(const PP_InputEvent& event) {
       pih->HandleMouseMoveEvent(event.u.mouse);
       return true;
 
+    case PP_INPUTEVENT_TYPE_MOUSEWHEEL:
+      pih->HandleMouseWheelEvent(event.u.wheel);
+      return true;
+
     case PP_INPUTEVENT_TYPE_CONTEXTMENU:
       // We need to return true here or else we'll get a local (plugin) context
       // menu instead of the mouseup event for the right click.