Remove //tools/idl_parser.

tools/idl_parser/test_parser/struct_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 Struct 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
- *Struct(MyStruct)
- *  Member(x)
- *    Type()
- *      PrimitiveType(uint32_t)
- *  Member(y)
- *    Type()
- *      PrimitiveType(uint64_t)
- *  Member(string)
- *    ExtAttributes()
- *      ExtAttribute(fake_attribute)
- *    Type()
- *      PrimitiveType(str_t)
- *  Member(z)
- *    Type()
- *      Typeref(Promise)
- *  ExtAttributes()
- *    ExtAttribute(union)
- */
-[union] struct MyStruct {
-  uint32_t x;
-  uint64_t y;
-  [fake_attribute] str_t string;
-  Promise z;
-};