Refactoring AndroidKeyStore to support a KeyStore running in another process

net/android/java/src/org/chromium/net/IRemoteAndroidKeyStore.aidl

+// 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.
+
+package org.chromium.net;
+
+import org.chromium.net.IRemoteAndroidKeyStoreCallbacks;
+
+/**
+ * Interface for communication with an Android KeyStore in another process.
+ */
+interface IRemoteAndroidKeyStore {
+    // Remote calls for SSlClientCertificateRequest - these allow retrieving
+    // the alias of the certificate to be used, its encoded chain and a handle
+    // for identifying a private key in the remote process.
+    String getClientCertificateAlias();
+    byte[] getEncodedCertificateChain(in String alias);
+    int getPrivateKeyHandle(in String alias);
+
+    // Registers callbacks for service->client communication.
+    void setClientCallbacks(IRemoteAndroidKeyStoreCallbacks callbacks);
+
+    // Remote calls for AndroidKeyStore - these functions are performing operations
+    // with a PrivateKey in the remote process using the handle provided by
+    // |getPrivateKeyHandle|.
+    byte[] getRSAKeyModulus(in int handle);
+    byte[] getPrivateKeyEncodedBytes(in int handle);
+    byte[] getDSAKeyParamQ(in int handle);
+    byte[] getECKeyOrder(in int handle);
+    byte[] rawSignDigestWithPrivateKey(in int handle, in byte[] message);
+    int getPrivateKeyType(in int handle);
+    void releaseKey(in int handle);
+}