NavigationControllerBrowserTest.EnsureFrameNavigationEntriesClearedOnMismatch (content_browsertests) failing on chromium.win/Win10 Tests x64

Failure log:
LogDog : chromium/bb/chromium.win/Win10_Tests_x64/16044/+/recipes/steps/content_browsertests_on_Windows-10-14393/0/logs/NavigationControllerBrowserTest.EnsureFrameNavigationEntriesClearedOnMismatch/0  kelvinp@chromium.org | Sign out
 [ RUN      ] NavigationControllerBrowserTest.EnsureFrameNavigationEntriesClearedOnMismatch
DevTools listening on ws://127.0.0.1:53703/devtools/browser/a825e716-0a35-45c8-a600-149f4fe1b4a1
../../content/browser/frame_host/navigation_controller_impl_browsertest.cc(5918): error:       Expected: 2U
      Which is: 2
To be equal to: entry->root_node()->children[0]->children.size()
      Which is: 0
../../content/browser/frame_host/navigation_controller_impl_browsertest.cc(5932): error:       Expected: 2U
      Which is: 2
To be equal to: entry->root_node()->children[0]->children.size()
      Which is: 0
[  FAILED  ] NavigationControllerBrowserTest.EnsureFrameNavigationEntriesClearedOnMismatch, where TypeParam =  and GetParam() =  (532 ms)
[ RUN      ] NavigationControllerBrowserTest.EnsureFrameNavigationEntriesClearedOnMismatch
DevTools listening on ws://127.0.0.1:59052/devtools/browser/46f0a238-5d9c-4e60-96a2-ffba27f05c76
../../content/browser/frame_host/navigation_controller_impl_browsertest.cc(5918): error:       Expected: 2U
      Which is: 2
To be equal to: entry->root_node()->children[0]->children.size()
      Which is: 0
../../content/browser/frame_host/navigation_controller_impl_browsertest.cc(5932): error:       Expected: 2U
      Which is: 2
To be equal to: entry->root_node()->children[0]->children.size()
      Which is: 0
[  FAILED  ] NavigationControllerBrowserTest.EnsureFrameNavigationEntriesClearedOnMismatch, where TypeParam =  and GetParam() =  (459 ms)
[ RUN      ] NavigationControllerBrowserTest.EnsureFrameNavigationEntriesClearedOnMismatch
DevTools listening on ws://127.0.0.1:59073/devtools/browser/94808b4b-6d69-461a-9d8a-4492168b3283
../../content/browser/frame_host/navigation_controller_impl_browsertest.cc(5918): error:       Expected: 2U
      Which is: 2
To be equal to: entry->root_node()->children[0]->children.size()
      Which is: 0
../../content/browser/frame_host/navigation_controller_impl_browsertest.cc(5932): error:       Expected: 2U
      Which is: 2
To be equal to: entry->root_node()->children[0]->children.size()
      Which is: 0
[  FAILED  ] NavigationControllerBrowserTest.EnsureFrameNavigationEntriesClearedOnMismatch, where TypeParam =  and GetParam() =  (457 ms)
[ RUN      ] NavigationControllerBrowserTest.EnsureFrameNavigationEntriesClearedOnMismatch
DevTools listening on ws://127.0.0.1:59084/devtools/browser/29abfcc1-f076-44d6-a508-51ec78424b2f
../../content/browser/frame_host/navigation_controller_impl_browsertest.cc(5918): error:       Expected: 2U
      Which is: 2
To be equal to: entry->root_node()->children[0]->children.size()
      Which is: 0
../../content/browser/frame_host/navigation_controller_impl_browsertest.cc(5932): error:       Expected: 2U
      Which is: 2
To be equal to: entry->root_node()->children[0]->children.size()
      Which is: 0
[  FAILED  ] NavigationControllerBrowserTest.EnsureFrameNavigationEntriesClearedOnMismatch, where TypeParam =  and GetParam() =  (450 ms)

First failed on:
https://uberchromegw.corp.google.com/i/chromium.win/builders/Win10%20Tests%20x64/builds/16044

Builders failed on: 
- Win10 Tests x64: 
  https://build.chromium.org/p/chromium.win/builders/Win10%20Tests%20x64