LogDog: Add project namespace to Butler/Collector.

client/logdog/butlerlib/bootstrap/environment.go

 // 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.
 
 package bootstrap
 
 // Environment variable names
 const (
         // EnvStreamServerPath is the path to the Butler's stream server endpoint.
         //
         // This can be used by applications to initiate a new Butler stream with an
         // existing Butler stream server process. If a subprocess is launched with a
         // stream server configuration, it will propagate this path to its child
         // processes.
         EnvStreamServerPath = "LOGDOG_STREAM_SERVER_PATH"
 
+        // EnvStreamProject is the enviornment variable set to the configured stream
+        // project name.
+        EnvStreamProject = "LOGDOG_STREAM_PROJECT"
+
         // EnvStreamPrefix is the environment variable set to the configured
-        // stream name prefix. command-line stream name prefix.
-        //
-        // Since this name is prepended to streams by the Butler, it is not possible
-        // for subprocesses to know the actual stream name that Butler will use for
-        // their streams without this information.
+        // stream name prefix.
         EnvStreamPrefix = "LOGDOG_STREAM_PREFIX"
 )