commit 394d28a0fd538118bda1b530c1a37414ea28dbe0
author kojii <kojii@chromium.org> Tue May 16 02:26:24 2017
committer Commit bot <commit-bot@chromium.org> Tue May 16 02:26:24 2017
tree f8dd755ade2996602bfe723c01a3bc31c74e1c15
parent 6a9e77ef378c0c835fc9d3265addb0c0d7bd911b

[LayoutNG] Refactor NGLineBreaker for ShapingLineBreaker

This patch refactors NGLineBreaker to match to the interface
ShapingLineBreaker provides.

This patch uses a mock of ShapingLineBreaker so that we can test
NGLineBreaker and ShapingLineBreaker independently. Integrating
ShapingLineBreaker will be after NGLineBreaker was stabilized.

This patch also changes the relationship of NGLineBreaker and
NGInlineLayoutAlgorithm. Measuring logic is moved to NGLineBreaker,
while NGInlineLayoutAlgorithm focuses on placing items and building line
boxes.

BUG=636993, 719615
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_layout_ng

Review-Url: https://codereview.chromium.org/2871733003
Cr-Commit-Position: refs/heads/master@{#471986}