Refactor declaration order for 2 A/B tests.
Refactor declaration order for 2 A/B tests.

Rearranged the declaration order for probability groups contained in 2 A/B
tests in a way that preserves the remaining probability space to the default
value, after the other groups receive an equal share of the sample space.

BUG=50451
r=jar


Review URL: http://codereview.chromium.org/3080004

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@53894 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser