Update oauth2's dependency on http.

OAuth2 was upgraded to support the new HTTP API prior to the new
conventions for package versioning, and the upgraded version hasn't
been released yet.

R=rnystrom@google.com
BUG=15809

Review URL: https://codereview.chromium.org//98163005

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@31523 260f80e4-7a28-3924-810f-c04153c831b5
diff --git a/pubspec.yaml b/pubspec.yaml
index b0d701d..74ee771 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: oauth2
-version: 0.9.0
+version: 0.9.1
 author: "Dart Team <misc@dartlang.org>"
 homepage: http://www.dartlang.org
 description: >
@@ -7,7 +7,7 @@
   behalf of a user, and making authorized HTTP requests with the user's
   OAuth2 credentials. Currently only works with dart:io.
 dependencies:
-  http: ">=0.9.0 <0.10.0"
+  http: ">=0.9.2 <0.10.0"
 dev_dependencies:
   unittest: ">=0.9.0 <0.10.0"
 environment: