Break up common_custom_types.mojom.

mojo/common/common_custom_types.mojom

-// Copyright 2016 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.
-
-module mojo.common.mojom;
-
-[Native]
-struct FilePath;
-
-[Native]
-struct ListValue;
-
-[Native]
-struct DictionaryValue;
-
-[Native]
-struct Time;
-
-struct TimeDelta {
-  int64 microseconds;
-};
-
-[Native]
-struct TimeTicks;
-
-// Corresponds to |base::string16| in base/strings/string16.h
-// Corresponds to |WTF::String| in
-// third_party/WebKit/Source/wtf/text/WTFString.h.
-struct String16 {
-  array<uint16> data;
-};
-
-// Corresponds to |base::UnguessableToken| in base/unguessable_token.h
-struct UnguessableToken {
-  uint64 high;
-  uint64 low;
-};
-
-// Corresponds to |base::Version| in base/version.h
-struct Version {
-  array<uint32> components;
-};
-
-// Corresponds to |base::File| in base/files/file.h
-struct File {
-  handle fd;
-};