Chrome Version: 4b523c1060e2bc62bceb42e3d1674635cd48f2e0
OS: macOS 10.13 High Sierra

What steps will reproduce the problem?
(1) Run gfx_unittests on 10.13
(2) Observe three test failures related to RenderText: RenderTextHarfBuzzTest.Multiline_HorizontalAlignment_HarfBuzz, RenderTextHarfBuzzTest.Multiline_NormalWidth_HarfBuzz, RenderTextTest.TextDoesntClip_Mac

[ RUN      ] RenderTextHarfBuzzTest.Multiline_NormalWidth/HarfBuzz
../../ui/gfx/render_text_unittest.cc:3071: Failure
      Expected: kTestStrings[i].run_lengths[second_line_start]
      Which is: 7
To be equal to: text_log[second_line_start].glyph_count
      Which is: 8
Google Test trace:
../../ui/gfx/render_text_unittest.cc:3049: kTestStrings[2]
[  FAILED  ] RenderTextHarfBuzzTest.Multiline_NormalWidth/HarfBuzz, where GetParam() = 0 (9 ms)

[ RUN      ] RenderTextHarfBuzzTest.Multiline_HorizontalAlignment/HarfBuzz
../../ui/gfx/render_text_unittest.cc:3229: Failure
      Expected: test_api()->GetAlignmentOffset(0).x() + difference
      Which is: 64
To be equal to: test_api()->GetAlignmentOffset(1).x()
      Which is: 74
Google Test trace:
../../ui/gfx/render_text_unittest.cc:3215: 
../../ui/gfx/render_text_unittest.cc:3229: Failure
      Expected: test_api()->GetAlignmentOffset(0).x() + difference
      Which is: 64
To be equal to: test_api()->GetAlignmentOffset(1).x()
      Which is: 54
Google Test trace:
../../ui/gfx/render_text_unittest.cc:3215: 
[  FAILED  ] RenderTextHarfBuzzTest.Multiline_HorizontalAlignment/HarfBuzz, where GetParam() = 0 (26 ms)

[ RUN      ] RenderTextTest.TextDoesntClip/Mac
../../ui/gfx/render_text_unittest.cc:402: Failure
      Expected: color
      Which is: 4294967295
To be equal to: buffer_color
      Which is: 4293377943
هٔهٔهٔهٔمرحبا at 44, 9
Google Test trace:
../../ui/gfx/render_text_unittest.cc:3930: TextDoesntClip Top Side
../../ui/gfx/render_text_unittest.cc:402: Failure
      Expected: color
      Which is: 4294967295
To be equal to: buffer_color
      Which is: 4281270272
هٔهٔهٔهٔمرحبا at 45, 9
Google Test trace:
../../ui/gfx/render_text_unittest.cc:3930: TextDoesntClip Top Side
../../ui/gfx/render_text_unittest.cc:402: Failure
      Expected: color
      Which is: 4294967295
To be equal to: buffer_color
      Which is: 4283410391
هٔهٔهٔهٔمرحبا at 46, 9
Google Test trace:
../../ui/gfx/render_text_unittest.cc:3930: TextDoesntClip Top Side
../../ui/gfx/render_text_unittest.cc:402: Failure
      Expected: color
      Which is: 4294967295
To be equal to: buffer_color
      Which is: 4293377943
هٔهٔهٔهٔمرحبا at 51, 9
Google Test trace:
../../ui/gfx/render_text_unittest.cc:3930: TextDoesntClip Top Side
../../ui/gfx/render_text_unittest.cc:402: Failure
      Expected: color
      Which is: 4294967295
To be equal to: buffer_color
      Which is: 4281270272
هٔهٔهٔهٔمرحبا at 52, 9
Google Test trace:
../../ui/gfx/render_text_unittest.cc:3930: TextDoesntClip Top Side
../../ui/gfx/render_text_unittest.cc:402: Failure
      Expected: color
      Which is: 4294967295
To be equal to: buffer_color
      Which is: 4283410391
هٔهٔهٔهٔمرحبا at 53, 9
Google Test trace:
../../ui/gfx/render_text_unittest.cc:3930: TextDoesntClip Top Side
../../ui/gfx/render_text_unittest.cc:402: Failure
      Expected: color
      Which is: 4294967295
To be equal to: buffer_color
      Which is: 4293377943
هٔهٔهٔهٔمرحبا at 58, 9
Google Test trace:
../../ui/gfx/render_text_unittest.cc:3930: TextDoesntClip Top Side
../../ui/gfx/render_text_unittest.cc:402: Failure
      Expected: color
      Which is: 4294967295
To be equal to: buffer_color
      Which is: 4281270272
هٔهٔهٔهٔمرحبا at 59, 9
Google Test trace:
../../ui/gfx/render_text_unittest.cc:3930: TextDoesntClip Top Side
../../ui/gfx/render_text_unittest.cc:402: Failure
      Expected: color
      Which is: 4294967295
To be equal to: buffer_color
      Which is: 4283410391
هٔهٔهٔهٔمرحبا at 60, 9
Google Test trace:
../../ui/gfx/render_text_unittest.cc:3930: TextDoesntClip Top Side
[  FAILED  ] RenderTextTest.TextDoesntClip/Mac, where GetParam() = 1 (97 ms)



What is the expected result?
Test passes

What happens instead?
Test fails

Please use labels and text to provide additional information.

Job: https://luci-milo.appspot.com/buildbot/chromium.fyi/Chromium%20Mac%2010.13/2
Logs: https://luci-logdog.appspot.com/v/?s=chromium%2Fbb%2Fchromium.fyi%2FChromium_Mac_10.13%2F2%2F%2B%2Frecipes%2Fsteps%2Fgfx_unittests%2F0%2Fstdout


For graphics-related bugs, please copy/paste the contents of the about:gpu
page at the end of this report.