Auto-rebaseline for r173452

http://src.chromium.org/viewvc/blink?view=revision&revision=173452

BUG=369609
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/264363003

git-svn-id: svn://svn.chromium.org/blink/trunk@173479 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Added comment to mention new script to update the UMA mapping.

The script produces patches such as the one at
https://codereview.chromium.org/272503003/

Review URL: https://codereview.chromium.org/264403002

git-svn-id: svn://svn.chromium.org/blink/trunk@173480 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Auto-rebaseline for r173452

http://src.chromium.org/viewvc/blink?view=revision&revision=173452

BUG=369609
TBR=enne@chromium.org

Review URL: https://codereview.chromium.org/269283005

git-svn-id: svn://svn.chromium.org/blink/trunk@173481 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Replace Selection.setPosition with Selection.collapse in layout tests.

Selection.setPosition is an alias of Selection.collapse and is not a standard function.

We take a UMA of setPosition and I'm going to obsolete it.

BUG=

Review URL: https://codereview.chromium.org/268753006

git-svn-id: svn://svn.chromium.org/blink/trunk@173482 bbb929c8-8fbe-4397-9dbb-9b2b20218538