Add GetUsbKeyCode dev interface for Pepper key events

ppapi/c/dev/ppb_keyboard_input_event_dev.h

Index: ppapi/c/dev/ppb_keyboard_input_event_dev.h
diff --git a/ppapi/c/dev/ppb_keyboard_input_event_dev.h b/ppapi/c/dev/ppb_keyboard_input_event_dev.h
new file mode 100644
index 0000000000000000000000000000000000000000..56f5f580c3ca72940602cebb38b46c280f8bdd11
--- /dev/null
+++ b/ppapi/c/dev/ppb_keyboard_input_event_dev.h
@@ -0,0 +1,75 @@
+/* Copyright (c) 2012 The Chromium Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/* From dev/ppb_keyboard_input_event_dev.idl,
+ *   modified Mon Feb 13 15:43:28 2012.
+ */
+
+#ifndef PPAPI_C_DEV_PPB_KEYBOARD_INPUT_EVENT_DEV_H_
+#define PPAPI_C_DEV_PPB_KEYBOARD_INPUT_EVENT_DEV_H_
+
+#include "ppapi/c/pp_bool.h"
+#include "ppapi/c/pp_macros.h"
+#include "ppapi/c/pp_resource.h"
+#include "ppapi/c/pp_stdint.h"
+
+#define PPB_KEYBOARD_INPUT_EVENT_DEV_INTERFACE_0_1 \
+    "PPB_KeyboardInputEvent(Dev);0.1"
+#define PPB_KEYBOARD_INPUT_EVENT_DEV_INTERFACE \
+    PPB_KEYBOARD_INPUT_EVENT_DEV_INTERFACE_0_1
+
+/**
+ * @file
+ * This file defines the <code>PPB_KeyboardInputEvent_Dev</code> interface,
+ * which provides access to the raw USB scancodes for key input events.
+ */
+
+
+/**
+ * @addtogroup Interfaces
+ * @{
+ */
+/**
+ * The <code>PPB_KeyboardInputEvent_Dev</code> interface is an extension to the
+ * PPB_KeyboardInputEvent</code> interface that provides
+ */
+struct PPB_KeyboardInputEvent_Dev_0_1 {
+  /**
+   * This sets the usb_scan_code in the given <code>resource</code>. It is
+   * intended that this method be called immediately after any call to
+   * <code>Create</code>.
+   *
+   * When GetUsbScanCode moves out of this _Dev interface, then the
+   * <code>usb_scan_code</code> param will be added to the <code>Create</code>
+   * method and this method will be removed.
+   *
+   * @param[in] key_event A <code>PP_Resource</code> created by
+   * <code>PPB_KeyboardInputEvent</code>'s <code>Create</code> method.
+   *
+   * @param[in] usb_scan_code The USB scancode to assign for this
+   * <code>key_event</code>.
+   *
+   * @return <code>PP_TRUE</code> if the usb scancode was set successfully.
+   */
+  PP_Bool (*SetUsbScanCode)(PP_Resource key_event, uint32_t usb_scan_code);
+  /**
+   * GetUsbScanCode() returns the USB scancode that corresponds to the key
+   * that generated this keyboard event.
+   *
+   * @param[in] key_event A <code>PP_Resource</code> corresponding to a
+   * keyboard event.
+   *
+   * @return The USB scancode field for the keyboard event.
+   */
+  uint32_t (*GetUsbScanCode)(PP_Resource key_event);
+};
+
+typedef struct PPB_KeyboardInputEvent_Dev_0_1 PPB_KeyboardInputEvent_Dev;
+/**
+ * @}
+ */
+
+#endif  /* PPAPI_C_DEV_PPB_KEYBOARD_INPUT_EVENT_DEV_H_ */
+