Move parts from enterprise.platformKeysInternal to platformKeysInternal for reuse.

chrome/common/extensions/api/platform_keys_internal.idl

+// Copyright 2015 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.
+
+// Internal API for to implement the platformKeys and enterprise.platformKeys
+// APIs.
+[ implemented_in = "chrome/browser/extensions/api/platform_keys/platform_keys_api.h" ]
+namespace platformKeysInternal {
+  // Invoked by <code>sign</code>.
+  // |signature| The signature, a octet string.
+  callback SignCallback = void(ArrayBuffer signature);
+
+  interface Functions {
+    // Internal version of platformKeys.subtleCrypto.sign and
+    // enterprise.platformKeys.Token.subtleCrypto.sign.
+    // |tokenId| The id of a Token returned by |getTokens|.
+    // |publicKey| The Subject Public Key Info of a key previously generated by
+    //     |generateKey| in DER encoding.
+    // |hashAlgorithmName| The recognized algorithm name as specified by
+    //     WebCrypto of the hash algorithm that will be used to digest |data|
+    //     before signing. Currently supported are: SHA-{1,256,384,512}.
+    //     TODO(pneubeck): use an enum once supported:
+    //         http://www.crbug.com/385539 .
+    // |data| The data to sign.
+    // |callback| Called back with the signature of |data|.
+    // TODO: Instead of ArrayBuffer should be (ArrayBuffer or ArrayBufferView),
+    // or at least (ArrayBuffer or Uint8Array).
+    static void sign(DOMString tokenId,
+                     ArrayBuffer publicKey,
+                     DOMString hashAlgorithmName,
+                     ArrayBuffer data,
+                     SignCallback callback);
+  };
+};