Add tilt_x and tilt_y to ppapi touchpoint.

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 25d2afb4f1c20840f82ae2a49ebf9f0b97bc1cd6..de237436d3298a8f296e8b88772e75ca3cd62e3e 100644
--- a/ppapi/api/ppb_input_event.idl
+++ b/ppapi/api/ppb_input_event.idl
@@ -962,6 +962,42 @@ interface PPB_TouchInputEvent {
   PP_TouchPoint GetTouchById([in] PP_Resource resource,
                              [in] PP_TouchListType list,
                              [in] uint32_t touch_id);
+
+  /**
+   * Returns the touch-tilt with the specified index in the specified list.
+   *
+   * @param[in] resource A <code>PP_Resource</code> corresponding to a touch
+   * event.
+   *
+   * @param[in] list The list.
+   *
+   * @param[in] touch_id The id of the touch-point.
+   *
+   * @return A <code>PP_FloatPoint</code> representing the tilt of the
+   * touch-point.
+   */
+  [version=1.1]
+  PP_FloatPoint GetTouchTiltByIndex([in] PP_Resource resource,
+                                    [in] PP_TouchListType list,
+                                    [in] uint32_t index);
+
+  /**
+   * Returns the touch-tilt with the specified touch-id in the specified list.
+   *
+   * @param[in] resource A <code>PP_Resource</code> corresponding to a touch
+   * event.
+   *
+   * @param[in] list The list.
+   *
+   * @param[in] touch_id The id of the touch-point.
+   *
+   * @return A <code>PP_FloatPoint</code> representing the tilt of the
+   * touch-point.
+   */
+  [version=1.1]
+  PP_FloatPoint GetTouchTiltById([in] PP_Resource resource,
+                                 [in] PP_TouchListType list,
+                                 [in] uint32_t touch_id);
 };
 
 [macro="PPB_IME_INPUT_EVENT_INTERFACE"]