Additional update on Pepper IME API and boilerplate thunk/proxy implementation.

ppapi/api/ppb_input_event.idl

Index: ppapi/api/ppb_input_event.idl
diff --git a/ppapi/api/ppb_input_event.idl b/ppapi/api/ppb_input_event.idl
index 1f95a8697ed27e9c41cfcb44be32fa04def94c00..98fa7b036bfe6dcd42157d0706f21ca2fe66293c 100644
--- a/ppapi/api/ppb_input_event.idl
+++ b/ppapi/api/ppb_input_event.idl
@@ -107,21 +107,21 @@ enum PP_InputEvent_Type {
    *
    * Register for this event using the PP_INPUTEVENT_CLASS_IME class.
    */
-  PP_INPUTEVENT_TYPE_COMPOSITION_START = 11,
+  PP_INPUTEVENT_TYPE_IME_COMPOSITION_START = 11,
 
   /**
    * Notification that the input method composition string is updated.
    *
    * Register for this event using the PP_INPUTEVENT_CLASS_IME class.
    */
-  PP_INPUTEVENT_TYPE_COMPOSITION_UPDATE = 12,
+  PP_INPUTEVENT_TYPE_IME_COMPOSITION_UPDATE = 12,
 
   /**
    * Notification that an input method composition process has completed.
    *
    * Register for this event using the PP_INPUTEVENT_CLASS_IME class.
    */
-  PP_INPUTEVENT_TYPE_COMPOSITION_END = 13,
+  PP_INPUTEVENT_TYPE_IME_COMPOSITION_END = 13,
 
   /**
    * Notification that an input method committed a string.