Rewrote password layout test and removed obsolete tests.

This is to make way for the deprecation of selectedTextRange and insertionPointLineNumber APIs from AccessibilityControler.
BUG=347859
R=dmazzoni

Review URL: https://codereview.chromium.org/1050123003

git-svn-id: svn://svn.chromium.org/blink/trunk@193977 bbb929c8-8fbe-4397-9dbb-9b2b20218538
14 files changed