Revert of mojo: Create a basic clipboard.

mojo/services/public/interfaces/clipboard/clipboard.mojom

-// Copyright 2014 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 {
-
-// A wrapper type which is just a Key/Value pair. Workaround until we get
-// proper maps in mojom.
-struct MimeTypePair {
-  string mime_type;
-  uint8[] data;
-};
-
-interface Clipboard {
-  enum Type {
-    COPY_PASTE = 0,
-    SELECTION = 1,
-    DRAG = 2
-  };
-
-  // Mime type constants
-  const string MIME_TYPE_TEXT = "text/plain";
-  const string MIME_TYPE_HTML = "text/html";
-  const string MIME_TYPE_URL = "text/url";
-
-  // Returns a sequence number which uniquely identifies clipboard state.
-  // Clients are able to assume that the clipboard contents are unchanged as
-  // long as this number has not changed. This number is monotonically
-  // increasing, is increased when the clipboard state changes, and is
-  // provided by Windows, Linux, and Mac.
-  GetSequenceNumber(Type clipboard_type) => (uint64 sequence);
-
-  // Returns the available mime types. (Note: the chrome interface has a
-  // |contains_filenames| parameter here, but it appears to always be set
-  // to false.)
-  GetAvailableMimeTypes(Type clipboard_types) => (string[] types);
-
-  // Returns the data associated with a Mime type, returning NULL if that data
-  // doesn't exist. Note: because of the inherit raciness of clipboard access,
-  // this may return NULL even if you just verified that it exists with
-  // GetAvailableFormatMimeTypes(). We don't want to provide one API to return
-  // the entire clipboard state because the combined size of the clipboard can
-  // be megabytes, especially when image data is involved.
-  ReadMimeType(Type clipboard_type, string mime_type) => (uint8[]? data);
-
-  // Writes a set of mime types to the clipboard. This will increment the
-  // sequence number. In the case of an empty or NULL list, this will just
-  // clear the clipboard.
-  WriteClipboardData(Type clipboard_type, MimeTypePair[]? data);
-};
-
-}  // module mojo