--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.chromium.sdk/src/org/chromium/sdk/internal/protocol/FailedCommandResponse.java	Wed Dec 23 17:13:18 2009 -0800
@@ -0,0 +1,31 @@
+// Copyright (c) 2009 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.sdk.internal.protocol;
+
+import org.chromium.sdk.internal.protocolparser.JsonField;
+import org.chromium.sdk.internal.protocolparser.JsonOptionalField;
+import org.chromium.sdk.internal.protocolparser.JsonOverrideField;
+import org.chromium.sdk.internal.protocolparser.JsonSubtype;
+import org.chromium.sdk.internal.protocolparser.JsonSubtypeConditionBoolValue;
+import org.chromium.sdk.internal.protocolparser.JsonType;
+
+/**
+ * A type for failed command response message. It should contain "message" field
+ * hinting at the cause of the failure.
+ */
+@JsonType
+public interface FailedCommandResponse extends JsonSubtype<CommandResponse> {
+  @JsonOverrideField
+  @JsonSubtypeConditionBoolValue(false)
+  boolean success();
+
+  String getMessage();
+
+  @JsonField(jsonLiteralName="request_seq")
+  Long getRequestSeq();
+
+  @JsonOptionalField
+  String getCommand();
+}