Add RetainedRef uses where needed.

sync/internal_api/http_bridge_unittest.cc

Index: sync/internal_api/http_bridge_unittest.cc
diff --git a/sync/internal_api/http_bridge_unittest.cc b/sync/internal_api/http_bridge_unittest.cc
index 1c83634f66941ded2adbe8e6f76f5b88019e1d63..f69bc755da6ee0f18fc4fb07d599bacb33736a16 100644
--- a/sync/internal_api/http_bridge_unittest.cc
+++ b/sync/internal_api/http_bridge_unittest.cc
@@ -385,8 +385,8 @@ TEST_F(MAYBE_SyncHttpBridgeTest, Abort) {
   int response_code = 0;
 
   io_thread()->task_runner()->PostTask(
-      FROM_HERE,
-      base::Bind(&MAYBE_SyncHttpBridgeTest::Abort, http_bridge));
+      FROM_HERE, base::Bind(&MAYBE_SyncHttpBridgeTest::Abort,
+                            base::RetainedRef(http_bridge)));
   bool success = http_bridge->MakeSynchronousPost(&os_error, &response_code);
   EXPECT_FALSE(success);
   EXPECT_EQ(net::ERR_ABORTED, os_error);