TimelinePanel: a fix for Frames mode overview. It kept old records.

Frame mode overview has its own array of frames. We have to clear it
when we start new record session.

BUG=
R=alph@chromium.org

Review URL: https://codereview.chromium.org/136683002

git-svn-id: svn://svn.chromium.org/blink/trunk@164965 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Revisit inspector test expectations.

TBR=yurys

Review URL: https://codereview.chromium.org/133773006

git-svn-id: svn://svn.chromium.org/blink/trunk@164966 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Update the name of the layout test helper binaries and remove dead code

R=alph@chromium.org
BUG=none

Review URL: https://codereview.chromium.org/130553004

git-svn-id: svn://svn.chromium.org/blink/trunk@164967 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Update expectations for fast/text/sub-pixel/text-scaling-pixel.html

BUG=290411
TBR=tdanderson

Review URL: https://codereview.chromium.org/136713003

git-svn-id: svn://svn.chromium.org/blink/trunk@164968 bbb929c8-8fbe-4397-9dbb-9b2b20218538