From 904252a9e8c8da6b30d37c2c7c0f402f2ec53fcb Mon Sep 17 00:00:00 2001
From: Burcu Dogan <jbd@google.com>
Date: Tue, 27 May 2014 14:37:57 +0200
Subject: [PATCH] ComputeEngineConfig should implement TokenFetcher.

---
 google/google.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/google/google.go b/google/google.go
index 72d26fc..5229a83 100644
--- a/google/google.go
+++ b/google/google.go
@@ -146,3 +146,10 @@ func (c *ComputeEngineConfig) FetchToken(existing *oauth2.Token) (token *oauth2.
 	}
 	return
 }
+
+// Cache returns nil. On Google Compute Engine, access tokens are
+// retrieved from the metaserver, no other persistence layer is
+// required.
+func (c *ComputeEngineConfig) Cache() oauth2.Cache {
+	return nil
+}