GitLab

Add a new performance test for line breaking using ShapingLineBreaker to
allow us to catch/detect performance regressions and track progressions.

Test: Source/platform/testing/ShapingLineBreakerPerfTest.cpp
Change-Id: If95c2d3b3f2279219f3d883f0015a3d1de5eaa2a
Reviewed-on: https://chromium-review.googlesource.com/729560
Commit-Queue: Emil A Eklund <eae@chromium.org>
Reviewed-by: Walter Korman <wkorman@chromium.org>
Reviewed-by: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#513237}