Remove //tools/idl_parser.

tools/idl_parser/test_parser/label_ppapi.idl

-/* Copyright (c) 2013 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. */
-
-/* Test Typedef productions
-
-Run with --test to generate an AST and verify that all comments accurately
-reflect the state of the Nodes.
-
-BUILD Type(Name)
-This comment signals that a node of type <Type> is created with the
-name <Name>.
-
-ERROR Error String
-This comment signals that a error of <Error String> is generated.  The error
-is not assigned to a node, but are expected in order.
-
-PROP Key=Value
-This comment signals that a property has been set on the Node such that
-<Key> = <Value>.
-
-TREE
-Type(Name)
-  Type(Name)
-  Type(Name)
-    Type(Name)
-    ...
-This comment signals that a tree of nodes matching the BUILD comment
-symatics should exist.  This is an exact match.
-*/
-
-/* TREE
- *Label(Chrome1)
- *  LabelItem(M13)
- */
-label Chrome1 {
-  M13 = 0.0
-};
-
-/* TREE
- *Label(Chrome2)
- *  LabelItem(M12)
- *  LabelItem(M13)
- */
-label Chrome2 {
-  M12 = 1.0,
-  M13 = 2.0,
-};