HarfBuzzShaperTest.ResolveCandidateRunsUnicodeVariants from blink_platform_unittests is failing reliably on Linux starting in this build:

https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Trusty/builds/20123

with the following failure:

Retrying 1 test (retry #1)
[ RUN      ] HarfBuzzShaperTest.ResolveCandidateRunsUnicodeVariants
../../third_party/WebKit/Source/platform/fonts/shaping/HarfBuzzShaperTest.cpp:95: Failure
Value of: testInfo(result)->glyphForTesting(0, 1)
  Actual: 198
Expected: 3u
Which is: 3
Standard Variants of Ideograph
../../third_party/WebKit/Source/platform/fonts/shaping/HarfBuzzShaperTest.cpp:95: Failure
Value of: testInfo(result)->glyphForTesting(0, 1)
  Actual: 198
Expected: 3u
Which is: 3
Ideographic Variants
[  FAILED  ] HarfBuzzShaperTest.ResolveCandidateRunsUnicodeVariants (7 ms)


Based on the regression range I think this CL was the cause:
https://chromium.googlesource.com/chromium/src/+/aacf8d1d11beaff516bd79f88b8571eae0f5d031

It looks like the build dependencies are incomplete, because https://codereview.chromium.org/2370393002 didn't run blink_platform_unittests in its tryjob for linux_chromium_rel_ng. CC'ing dpranke@ and esprehn@ to help investigate the missing dependency.

This is slowing down a lot of CLs going through the commit queue. Either the test should be fixed or the CL should be reverted.