Update from Google.

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MOE_MIGRATED_REVID=85702957
diff --git a/src/main/java/com/google/devtools/build/lib/runtime/Command.java b/src/main/java/com/google/devtools/build/lib/runtime/Command.java
new file mode 100644
index 0000000..1797cd3
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/runtime/Command.java
@@ -0,0 +1,108 @@
+// Copyright 2014 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package com.google.devtools.build.lib.runtime;
+
+import com.google.devtools.common.options.Option;
+import com.google.devtools.common.options.OptionsBase;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * An annotation that lets blaze commands specify their options and their help.
+ * The annotations are processed by {@link BlazeCommand}.
+ */
+@Target(ElementType.TYPE)
+@Retention(RetentionPolicy.RUNTIME)
+public @interface Command {
+  /**
+   * The name of the command, as the user would type it.
+   */
+  String name();
+
+  /**
+   * Options processed by the command, indicated by options interfaces.
+   * These interfaces must contain methods annotated with {@link Option}.
+   */
+  Class<? extends OptionsBase>[] options() default {};
+
+  /**
+   * The set of other Blaze commands that this annotation's command "inherits"
+   * options from.  These classes must be annotated with {@link Command}.
+   */
+  Class<? extends BlazeCommand>[] inherits() default {};
+
+  /**
+   * A short description, which appears in 'blaze help'.
+   */
+  String shortDescription();
+
+  /**
+   * True if the configuration-specific options should be available for this command.
+   */
+  boolean usesConfigurationOptions() default false;
+
+  /**
+   * True if the command runs a build.
+   */
+  boolean builds() default false;
+
+  /**
+   * True if the command should not be shown in the output of 'blaze help'.
+   */
+  boolean hidden() default false;
+
+  /**
+   * Specifies whether this command allows a residue after the parsed options.
+   * For example, a command might expect a list of targets to build in the
+   * residue.
+   */
+  boolean allowResidue() default false;
+
+  /**
+   * Returns true if this command wants to write binary data to stdout.
+   * Enabling this flag will disable ANSI escape stripping for this command.
+   */
+  boolean binaryStdOut() default false;
+
+  /**
+   * Returns true if this command wants to write binary data to stderr.
+   * Enabling this flag will disable ANSI escape stripping for this command.
+   */
+  boolean binaryStdErr() default false;
+
+  /**
+   * The help message for this command.  If the value starts with "resource:",
+   * the remainder is interpreted as the name of a text file resource (in the
+   * .jar file that provides the Command implementation class).
+   */
+  String help();
+
+  /**
+   * Returns true iff this command may only be run from within a Blaze workspace. Broadly, this
+   * should be true for any command that interprets the package-path, since it's potentially
+   * confusing otherwise.
+   */
+  boolean mustRunInWorkspace() default true;
+
+  /**
+   * Returns true iff this command is allowed to run in the output directory,
+   * i.e. $OUTPUT_BASE/_blaze_$USER/$MD5/... . No command should be allowed to run here,
+   * but there are some legacy uses of 'blaze query'.
+   */
+  boolean canRunInOutputDirectory() default false;
+
+}