Remove HandleInputEvent from PPP_Instance and freeze to 1.0.

ppapi/examples/2d/graphics_2d_example.c

Index: ppapi/examples/2d/graphics_2d_example.c
diff --git a/ppapi/examples/2d/graphics_2d_example.c b/ppapi/examples/2d/graphics_2d_example.c
index ccec9a1af2c20bd0d6952dc4745194ec694a6008..6495cdce4783fd8f2ebde855f4cee0211551e66e 100644
--- a/ppapi/examples/2d/graphics_2d_example.c
+++ b/ppapi/examples/2d/graphics_2d_example.c
@@ -157,12 +157,6 @@ void Instance_DidChangeView(PP_Instance pp_instance,
 void Instance_DidChangeFocus(PP_Instance pp_instance, PP_Bool has_focus) {
 }
 
-PP_Bool Instance_HandleInputEvent(PP_Instance pp_instance,
-                               const struct PP_InputEvent* event) {
-  /* We don't handle any events. */
-  return PP_FALSE;
-}
-
 PP_Bool Instance_HandleDocumentLoad(PP_Instance pp_instance,
                                     PP_Resource pp_url_loader) {
   return PP_FALSE;
@@ -173,7 +167,6 @@ static struct PPP_Instance instance_interface = {
   &Instance_DidDestroy,
   &Instance_DidChangeView,
   &Instance_DidChangeFocus,
-  &Instance_HandleInputEvent,
   &Instance_HandleDocumentLoad
 };