Vendor main dependencies.

vendor/google.golang.org/cloud/compute/metadata/go13.go

@@ -0,0 +1,37 @@
+// Copyright 2015 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.
+
+// +build go1.3
+
+package metadata
+
+import (
+	"net"
+	"time"
+)
+
+// This is a workaround for https://github.com/golang/oauth2/issues/70, where
+// net.Dialer.KeepAlive is unavailable on Go 1.2 (which App Engine as of
+// Jan 2015 still runs).
+//
+// TODO(bradfitz,jbd,adg): remove this once App Engine supports Go
+// 1.3+.
+func init() {
+	go13Dialer = func() *net.Dialer {
+		return &net.Dialer{
+			Timeout:   750 * time.Millisecond,
+			KeepAlive: 30 * time.Second,
+		}
+	}
+}