LogDog: Add project namespacing to `logdog_cat`

common/logdog/coordinator/client.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 coordinator
 
 import (
         "github.com/luci/luci-go/common/api/logdog_coordinator/logs/v1"
         "github.com/luci/luci-go/common/auth"
+        "github.com/luci/luci-go/common/config"
         "github.com/luci/luci-go/common/logdog/types"
         "github.com/luci/luci-go/common/prpc"
 )
 
 var (
         // Scopes is the set of scopes needed for the Coordinator user endpoints.
         Scopes = []string{
                 auth.OAuthScopeEmail,
         }
 )
 
 // Client wraps a Logs client with user-friendly methods.
 //
 // Each method should operate independently, so calling methods from different
 // goroutines must not cause any problems.
 type Client struct {
         // C is the underlying LogsClient interface.
         C logdog.LogsClient
+
+        project config.ProjectName
 }
 
 // NewClient returns a new Client instance bound to a pRPC Client.
-func NewClient(c *prpc.Client) *Client {
+func NewClient(c *prpc.Client, project config.ProjectName) *Client {
         return &Client{
-                C: logdog.NewLogsPRPCClient(c),
+                C:       logdog.NewLogsPRPCClient(c),
+                project: project,
         }
 }
 
 // Stream returns a Stream instance for the named stream.
 func (c *Client) Stream(path types.StreamPath) *Stream {
         return &Stream{
                 c:    c,
                 path: path,
         }
 }