Fixed some TODO comments so they wouldn't show up in the docs.

ppapi/api/ppb_input_event.idl

Index: ppapi/api/ppb_input_event.idl
===================================================================
--- ppapi/api/ppb_input_event.idl	(revision 124481)
+++ ppapi/api/ppb_input_event.idl	(working copy)
@@ -64,10 +64,13 @@
 
   /**
    * Notification that a key transitioned from "up" to "down".
-   * TODO(brettw) differentiate from KEYDOWN.
    *
    * Register for this event using the PP_INPUTEVENT_CLASS_KEYBOARD class.
    */
+
+  /*
+   * TODO(brettw) differentiate from KEYDOWN.
+   */
   PP_INPUTEVENT_TYPE_RAWKEYDOWN = 6,
 
   /**
@@ -96,10 +99,12 @@
   PP_INPUTEVENT_TYPE_CHAR = 9,
 
   /**
-   * TODO(brettw) when is this used?
-   *
    * Register for this event using the PP_INPUTEVENT_CLASS_MOUSE class.
    */
+
+  /*
+   * TODO(brettw) when is this used?
+   */
   PP_INPUTEVENT_TYPE_CONTEXTMENU = 10,
 
   /**
@@ -516,7 +521,7 @@
    */
   [returnByValue] PP_Point GetPosition([in] PP_Resource mouse_event);
 
-  /**
+  /*
    * TODO(brettw) figure out exactly what this means.
    */
   int32_t GetClickCount([in] PP_Resource mouse_event);