Reland http://codereview.chromium.org/7452002/ again

ppapi/c/pp_input_event.h

Index: ppapi/c/pp_input_event.h
diff --git a/ppapi/c/pp_input_event.h b/ppapi/c/pp_input_event.h
index 0c7854cfbe99170020e391e3ced795fad9ee9a11..c3defc9344022e72e3bc4ce8a6c293c2641652eb 100644
--- a/ppapi/c/pp_input_event.h
+++ b/ppapi/c/pp_input_event.h
@@ -192,44 +192,6 @@ struct PP_InputEvent_Wheel {
 PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_InputEvent_Wheel, 24);
 
 /**
- * The PP_InputEventData union represents all input event data types.
- */
-union PP_InputEventData {
-  struct PP_InputEvent_Key key;
-  struct PP_InputEvent_Character character;
-  struct PP_InputEvent_Mouse mouse;
-  struct PP_InputEvent_Wheel wheel;
-  /**
-   * This value allows new events to be added without changing the size of
-   * this struct.
-   */
-  char padding[64];
-};
-
-/**
- * The PP_InputEvent struct represents all input events.
- */
-struct PP_InputEvent {
-  /** This value represents the type of the event. */
-  PP_InputEvent_Type type;
-  /** This value ensure the time_stamp is aligned on an 8-byte boundary
-   * relative to the start of the struct. Some compilers align doubles
-   * on 8-byte boundaries for 32-bit x86, and some align on 4-byte boundaries.
-   */
-  int32_t padding;
-  /**
-   * This value represents the time that this event was generated. This value
-   * is not relative to any particular epoch; the most you can do is compare
-   * time stamps.
-   */
-  PP_TimeTicks time_stamp;
-  /**
-   * This value represents the event type and its specific data.
-   */
-  union PP_InputEventData u;
-};
-PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_InputEvent, 80);
-/**
  * @}
  */