Update idlsync.py to pull in dependencies required for chrome api generation.

third_party/chrome/tools/test/idl_basics.idl

-// 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.
-
-// Tests a variety of basic API definition features.
-
-[internal] namespace idl_basics {
-  // Enum description
-  enum EnumType {
-    name1,
-    name2
-  };
-
-  dictionary MyType1 {
-    // This comment tests "double-quotes".
-    [legalValues=(1,2)] long x;
-    DOMString y;
-    DOMString z;
-    DOMString a;
-    DOMString b;
-    DOMString c;
-  };
-
-  dictionary MyType2 {
-    DOMString x;
-  };
-
-  callback Callback1 = void();
-  callback Callback2 = void(long x);
-  callback Callback3 = void(MyType1 arg);
-  callback Callback4 = void(MyType2[] arg);
-  callback Callback5 = void(EnumType type);
-  // A comment on a callback.
-  // |x|: A parameter.
-  callback Callback6 = void(long x);
-  // |x|: Just a parameter comment, with no comment on the callback.
-  callback Callback7 = void(long x);
-
-  interface Functions {
-    static void function1();
-    static void function2(long x);
-    // This comment should appear in the documentation,
-    // despite occupying multiple lines.
-    //
-    // |arg|: So should this comment
-    // about the argument.
-    // <em>HTML</em> is fine too.
-    static void function3(MyType1 arg);
-
-    // This tests if "double-quotes" are escaped correctly.
-    //
-    // It also tests a comment with two newlines.
-    static void function4(Callback1 cb);
-    static void function5(Callback2 cb);
-    static void function6(Callback3 cb);
-
-    static void function7(optional long arg);
-    static void function8(long arg1, optional DOMString arg2);
-    static void function9(optional MyType1 arg);
-
-    static void function10(long x, long[] y);
-    static void function11(MyType1[] arg);
-
-    static void function12(Callback4 cb);
-
-    static void function13(EnumType type, Callback5 cb);
-    static void function14(EnumType[] types);
-
-    // "switch" is a reserved word and should cause a C++ compile error if we
-    // emit code for this declaration.
-    [nocompile] static void function15(long switch);
-
-    static void function16(Callback6 cb);
-    static void function17(Callback7 cb);
-    // |cb|: Override callback comment.
-    static void function18(Callback7 cb);
-  };
-
-  interface Events {
-    static void onFoo1();
-    static void onFoo2(long x);
-    static void onFoo2(MyType1 arg);
-    static void onFoo3(EnumType type);
-  };
-};