IDL compiler: [MeasureAs] interfaces

BUG=239771
NOTRY=true

Review URL: https://codereview.chromium.org/103963003

git-svn-id: svn://svn.chromium.org/blink/trunk@163385 bbb929c8-8fbe-4397-9dbb-9b2b20218538
SVG W3C rebaselines

New image and text rebaselines for SVG W3C tests, mostyl mac text
changes due to the changes in r163145.

TBR=leviw@chromium.org
BUG=

Review URL: https://codereview.chromium.org/109823002

git-svn-id: svn://svn.chromium.org/blink/trunk@163386 bbb929c8-8fbe-4397-9dbb-9b2b20218538
TextIteratorTest: Add a utility function to reduce the amount of boilerplate.

A trivial clean-up of unit tests for TextIterator.

BUG=none

Review URL: https://codereview.chromium.org/105323003

git-svn-id: svn://svn.chromium.org/blink/trunk@163387 bbb929c8-8fbe-4397-9dbb-9b2b20218538