https://chromium-review.googlesource.com/c/chromium/src/+/1255082 modified the affected test. Since this CL is fixing a memory leak, I'm not reverting it. rouslan@ or jinho.bang@ can you take a look? Thanks!

Jinho: Please investigate what is causing the test flake. Thank you.

 Issue 891170  has been merged into this issue.

Test appears to be crash-flaking on Linux (dbg), Linux MSAN, win-asan, and Win7 (dbg). Partial stack from example failure on Win7 (dbg) (https://logs.chromium.org/logs/chromium/buildbucket/cr-buildbucket.appspot.com/8933818904421749280/+/steps/network_service_browser_tests/0/logs/PaymentRequestShippingAddressEditorTest.RetryWithShippingAddressErrors_HasSameValueButDifferentErrorsShown/0):

[ RUN      ] PaymentRequestShippingAddressEditorTest.RetryWithShippingAddressErrors_HasSameValueButDifferentErrorsShown
  [4128:4296:1001/184341.606:WARNING:discovery_network_list_win.cc(195)] Failed to open Wlan client handle: 1062
  [4128:1236:1001/184341.699:WARNING:chrome_browser_main_win.cc(647)] Command line too long for RegisterApplicationRestart: [snipped by smcgruer@]
  [5808:4532:1001/184342.636:INFO:media_foundation_video_encode_accelerator_win.cc(347)] Windows versions earlier than 8 are not supported.
  [4128:1236:1001/184342.847:WARNING:gaia_auth_fetcher.cc(858)] Could not reach Google Accounts servers: errno -11
  [4128:1236:1001/184343.848:WARNING:gaia_auth_fetcher.cc(858)] Could not reach Google Accounts servers: errno -11
  [4128:1440:1001/184344.781:WARNING:embedded_test_server.cc(239)] Request not handled. Returning 404: /favicon.ico
  [4128:1236:1001/184345.183:ERROR:textfield.cc(1762)] NOT IMPLEMENTED
  Received fatal exception EXCEPTION_ACCESS_VIOLATION
  Backtrace:
  	views::View::SchedulePaint [0x6B4127CC+60]
  	views::View::SchedulePaintBoundsChanged [0x6B4132BD+61]
  	views::View::SetBoundsRect [0x6B412FC6+518]
  	views::BoundsAnimator::AnimationProgressed [0x6B2C0C4D+653]
  	gfx::LinearAnimation::Step [0x6ACE9058+376]
  	gfx::AnimationContainer::Run [0x6ACE3524+452]


ASAN equivalent:

PaymentRequestShippingAddressEditorTest.RetryWithShippingAddressErrors
  [7752:7276:1002/002544.602:WARNING:discovery_network_list_win.cc(195)] Failed to open Wlan client handle: 1062
  [7752:4216:1002/002544.930:WARNING:chrome_browser_main_win.cc(647)] Command line too long for RegisterApplicationRestart: [snipped by smcgruer@]
  [7752:3964:1002/002548.258:WARNING:embedded_test_server.cc(239)] Request not handled. Returning 404: /favicon.ico
  [7752:4216:1002/002549.046:ERROR:textfield.cc(1762)] NOT IMPLEMENTED
  =================================================================
  ==7752==ERROR: AddressSanitizer: heap-use-after-free on address 0x12f6718da368 at pc 0x7ff72913b7f1 bp 0x00f9485c9480 sp 0x00f9485c94c8
  READ of size 4 at 0x12f6718da368 thread T0
  ==7752==*** WARNING: Failed to initialize DbgHelp!              ***
  ==7752==*** Most likely this means that the app is already      ***
  ==7752==*** using DbgHelp, possibly with incompatible flags.    ***
  ==7752==*** Due to technical reasons, symbolization might crash ***
  ==7752==*** or produce wrong results.                           ***
      #0 0x7ff72913b7f0 in views::BoundsAnimator::AnimationProgressed C:\b\swarming\w\ir\cache\builder\src\ui\views\animation\bounds_animator.cc:228
      #1 0x7ff729604ec6 in gfx::LinearAnimation::Step C:\b\swarming\w\ir\cache\builder\src\ui\gfx\animation\linear_animation.cc:90
      #2 0x7ff72d524b89 in gfx::AnimationContainer::Run C:\b\swarming\w\ir\cache\builder\src\ui\gfx\animation\animation_container.cc:91
      #3 0x7ff728273956 in base::RepeatingTimer::RunUserTask C:\b\swarming\w\ir\cache\builder\src\base\timer\timer.cc:302
      #4 0x7ff728272aa9 in base::internal::BaseTimerTaskInternal::Run C:\b\swarming\w\ir\cache\builder\src\base\timer\timer.cc:49


Please investigate + fix. If test continues to flake it will be disabled on those platforms.

The fix is in the CQ.

I already reverted my patch when this happens:
https://chromium-review.googlesource.com/c/chromium/src/+/1256394

Also, I'm already sent a reland patch here:
https://chromium-review.googlesource.com/c/chromium/src/+/1258813

Awesome, thank you very much for your proactive work fixing this! :)

Thank you and sorry for making this issue.