DCHECK RenderText never renders more than max_lines()

Assert that if the text is homogeneous in style, font size,
weight, etc, multiline rendering should never render more than
max_lines().

Bug: 866720
Change-Id: I8b3cf652143d09c7e6d6bd1d8eb0b22714aa73a4
Reviewed-on: https://chromium-review.googlesource.com/1149409
Reviewed-by: Michael Wasserman <msw@chromium.org>
Commit-Queue: Wei-Yin Chen (陳威尹) <wychen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#578053}
3 files changed