commit 888dbca2f720ae2ae52dce1d88063e46e3b53c28
author Seigo Nonaka <nona@google.com> Fri Nov 09 00:48:58 2018 -0800
committer Seigo Nonaka <nona@google.com> Wed Nov 14 13:18:38 2018 -0800
tree ed2a3cae9df1d72f67a10e77ae2f475cc4b8fff7
parent e9f5e860547e7314c4c0e03fa4838c5b06164f5d

Refactor TextLine class

Did following refactoring:
- The surrogate composition is not necessary since this method is only
  interested in TAB character.
- Move BiDi information interpretation logic to Layout.Directions.
- The short circuit for DIRS_ALL_LEFT_TO_RIGHT/DIRS_ALL_RIGHT_TO_LEFT
  is not necessary.
- Renamed the variables.

Bug: 119312268
Test: atest TextLineTest
Test: TreeHugger
Test: Verified locally this doesn't cause performance regression
Change-Id: If987387673ec5a22f703952dfbe45b084664ee59