Blink gardening: image rebase for hindi-spacing.html

TBR=enne@chromium.org
NOTRY=true
BUG=N/A

Review URL: https://codereview.chromium.org/26564005

git-svn-id: svn://svn.chromium.org/blink/trunk@159200 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Fix get_latest_build to return actual latest build

The code and tests implicitly assume that converting from a list
to a set to a list again does not change ordering. This seems
to be true for small lists, such as the one in the unit tests. For
a list of, say, 200 items, this is not true.

The fix is to add a call to sorted() before indexing the list
of latest cached builds.

BUG=305392

Review URL: https://codereview.chromium.org/26601003

git-svn-id: svn://svn.chromium.org/blink/trunk@159201 bbb929c8-8fbe-4397-9dbb-9b2b20218538