commit 6397437d430ed91cfe59f01624dcbff38f94b6ef
author Luo Yu <yuluo@google.com> Mon Dec 26 20:29:31 2016 +0800
committer Luo Yu <yuluo@google.com> Thu Mar 02 14:24:39 2017 +0800
tree 57a8c8f4fcd7c6d8998df1a9bb369f4bce423a99
parent f001b758c13b6757358f0e260379e88d038b86c0

Update Result panel for search preview test.

App Indexing Search preview test goes through the whole Google Search
pipeline in the backend. It's a golden test for public content app
indexing.
Search preview test shows app search preview directly via Google Search.
so the result panel will only need to present a hyperlink which points to google
search preview page to user.

New UI has already been got agreement on:
https://docs.google.com/document/d/1YbKMlmUClgyrbDAJS6M4nvfy3MG9PswpJpsi2O7jebg/edit

This change also refactors error message handling logic.

Test: Related test updated.

Change-Id: I4cdb4cabc7e51c15362a5f45732fbc0d28e63915