Curate TestExpectations.
Curate TestExpectations.

-Mainly, move slow but passing lines to the top of the file into their own section.
-Keep slow lines that are failing on a different platform grouped with the failure
line instead of in the slow section at the top.
-Remove some useless comments and whitespace.

TBR=adamk@chromium.org

Review URL: https://chromiumcodereview.appspot.com/18089022

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@153273 bbb929c8-8fbe-4397-9dbb-9b2b20218538

primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs