Add version field to syncer::Invalidation.

chrome/browser/extensions/api/push_messaging/push_messaging_apitest.cc

Index: chrome/browser/extensions/api/push_messaging/push_messaging_apitest.cc
diff --git a/chrome/browser/extensions/api/push_messaging/push_messaging_apitest.cc b/chrome/browser/extensions/api/push_messaging/push_messaging_apitest.cc
index 6a384709fa476ef0b2f0bcba2885dfbe8a202f9f..c766c2157a24c4b0db4602fa6d7ba405c6edb159 100644
--- a/chrome/browser/extensions/api/push_messaging/push_messaging_apitest.cc
+++ b/chrome/browser/extensions/api/push_messaging/push_messaging_apitest.cc
@@ -81,7 +81,10 @@ class PushMessagingApiTest : public ExtensionApiTest {
   void EmitInvalidation(
       const invalidation::ObjectId& object_id,
       const std::string& payload) {
-    fake_invalidation_service_->EmitInvalidationForTest(object_id, payload);
+    fake_invalidation_service_->EmitInvalidationForTest(
+        object_id,
+        syncer::Invalidation::kUnknownVersion,

[rlarocque, 2013/07/16 18:33:16]

I'm not sure this is right, though I don't think it will cause any harm.  I'm OK
with letting this through, if the push_messaging reviewer approves.

+        payload);
   }
 
   PushMessagingAPI* GetAPI() {