[chromedriver] Update Java tests to latest selenium release, 2.31.

README.chromium

 Name: WebDriver
 Short Name: WebDriver
-URL: http://selenium.googlecode.com/svn/tags/selenium-2.22.0
-Version: 2.22
-Revision: 17049
+URL: https://code.google.com/p/selenium
+Version: 2.31
+Revision: 1bd294d185a80fa4206dfeab80ba773c04ac33c0
 License: Apache 2.0
 License File: LICENSE
 Security Critical: no
 
 Description:
   WebDriver is a clean, fast framework for automated testing of webapps.
 
   This directory contains code and data needed for running the WebDriver java
   acceptance tests.
 
 Local Modifications:
-- Applied changes in patch.diff (for testing with the unreleased ChromeDriver).
+- Applied changes in patch.diff.
 - Added prebuilt standalone java test jar by running:
       ./go //java/client/test/org/openqa/selenium/chrome:test:uber
       cp build/java/client/test/org/openqa/selenium/chrome/test-standalone.jar .
-- Moved java/client/test/keystore to top level directory.
+- Copied java/client/test/keystore to top level directory.
+      cp java/client/test/keystore .
+- Zip all of common into common.zip
+      zip -r common.zip common
 - Removed all files except for:
-      common/
+      common.zip
       keystore
       LICENSE
       README.chromium
       test-standalone.jar
-- Removed all svn/git files:
-      find \( -name ".svn" -o -name ".gitignore" \) -exec rm -rf {} \;