Remove unused in-process pepper APIs

ppapi/api/dev/ppp_widget_dev.idl

Index: ppapi/api/dev/ppp_widget_dev.idl
diff --git a/ppapi/api/dev/ppp_widget_dev.idl b/ppapi/api/dev/ppp_widget_dev.idl
deleted file mode 100644
index 18d9ba7c2fa37871ed2a9eb8a330591f91b9fce2..0000000000000000000000000000000000000000
--- a/ppapi/api/dev/ppp_widget_dev.idl
+++ /dev/null
@@ -1,26 +0,0 @@
-/* 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.
- */
-
-/**
- * Implementation of the Widget interface.
- */
-
-label Chrome {
-  M14 = 0.2
-};
-
-/**
- * The interface for reusing browser widgets.
- */
-interface PPP_Widget_Dev {
-  /**
-   * Informs the instance that the given rectangle needs to be repainted.
-   */
-  void Invalidate([in] PP_Instance instance,
-                  [in] PP_Resource widget,
-                  [in] PP_Rect dirty_rect);
-};
-
-