Updating trybot root location in codereview.settings.

This is needed due to changes in the way the trybots checkout the source code before applying the uploaded patch for a try job.

BUG=none
TEST=local master and submitted tryjob + verifying update step succeeded. Tryjob submitted to live try master with patch applying properly for all bots.
Review URL: https://webrtc-codereview.appspot.com/1059004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@546 16f28f9a-4ce2-e073-06de-1de4eb20be90

codereview.settings

@@ -2,11 +2,12 @@
 # The LibYuv code review is via WebRtc's code review
 CODE_REVIEW_SERVER: webrtc-codereview.appspot.com
 #CC_LIST:
-#VIEW_VC:
+VIEW_VC: https://code.google.com/p/libyuv/source/detail?r=
 #STATUS:
 TRY_ON_UPLOAD: False
 TRYSERVER_HTTP_HOST: webrtc-cb-linux-master.cbf.corp.google.com
 TRYSERVER_HTTP_PORT: 9020
+TRYSERVER_ROOT: src
 #TRYSERVER_SVN_URL:
 #GITCL_PREUPLOAD:
 #GITCL_PREDCOMMIT: