Add GetUsbKeyCode dev interface for Pepper key events

ppapi/c/ppb_input_event.h

Index: ppapi/c/ppb_input_event.h
diff --git a/ppapi/c/ppb_input_event.h b/ppapi/c/ppb_input_event.h
index 7d948615c1d252babf5ef6099a6c7af8188c0f72..e34fb81316aa8cbb8104fc08c7e4740c077b0ab5 100644
--- a/ppapi/c/ppb_input_event.h
+++ b/ppapi/c/ppb_input_event.h
@@ -3,7 +3,7 @@
  * found in the LICENSE file.
  */
 
-/* From ppb_input_event.idl modified Mon Nov 14 10:36:01 2011. */
+/* From ppb_input_event.idl modified Mon Feb  6 17:00:27 2012. */
 
 #ifndef PPAPI_C_PPB_INPUT_EVENT_H_
 #define PPAPI_C_PPB_INPUT_EVENT_H_
@@ -233,7 +233,15 @@ typedef enum {
    *
    * Request this input event class if you allow on-the-spot IME input.
    */
-  PP_INPUTEVENT_CLASS_IME = 1 << 4
+  PP_INPUTEVENT_CLASS_IME = 1 << 4,
+  /**
+   * Requests low-level keyboard events. Instead of Windows virtual key code,
+   * this will return USB scan codes for each key press.
+   *
+   * As with PP_INPUTEVENT_CLASS_KEYBOARD, you will usually want to request
+   * filtered mode so you can pass on the events.
+   */
+  PP_INPUTEVENT_CLASS_LOWLEVEL_KEYBOARD_Dev = 1 << 5
 } PP_InputEvent_Class;
 PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_InputEvent_Class, 4);
 /**