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Updating with to new OTS repo from https://github.com/khaledhosny/ots.git
Hash tag imported: c24a839b1c66c4de09e58fabaacb82bf3bd692a4

Some important differences between new and old version of OTS:
1. Support for MATH table
2. Implementation changes related to new WOFF 2.0
3. Bug fixes related to OTF tables (GDEF, GSUB etc) parsing
4. Accept platform 0 encoding 1 cmap subtables
5. Allow fonts with CMAP format-12 or format-13 table

A dummy version of EnableWOFF() is added to get Blink compiled.
After the following CL is landed in Blink, it'll be removed.
Blink CL: https://codereview.chromium.org/774253008

# TODO(jschuh): 4267, 4334 are 64-bit cleanness issue. http://crbug.com/167187

# TODO(h.joshi) : Make 4800 go away. <https://github.com/khaledhosny/ots/issues/44>.
Currently patch to github (https://github.com/himanshuispresent/ots/commit/02f724f758ddb1cb264cc0259ffd5ef1cafa164a) is
submitted so that taking OTS repository to Chromium should not cause issue on Windows bots.

TEST: Blink layout tests: fast/css/font-face*
BUG=339857

Review URL: https://codereview.chromium.org/775893002

Cr-Commit-Position: refs/heads/master@{#308054}