Looks like that CL caused many flakes, will revert.

Failure log FTR:

[ RUN      ] BrowsingDataRemoverBrowserTest.SessionOnlyStorageRemoved
objc[7229]: Class RTCDispatcher is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x14639a2b0) and /b/s/w/ir/out/Debug/browser_tests (0x10c327518). One of the two will be used. Which one is undefined.
objc[7229]: Class RTCEncodedImage is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x14639a300) and /b/s/w/ir/out/Debug/browser_tests (0x10c327568). One of the two will be used. Which one is undefined.
objc[7229]: Class RTCRtpFragmentationHeader is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x14639a350) and /b/s/w/ir/out/Debug/browser_tests (0x10c3275b8). One of the two will be used. Which one is undefined.
objc[7229]: Class RTCVideoCapturer is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x14639a378) and /b/s/w/ir/out/Debug/browser_tests (0x10c3275e0). One of the two will be used. Which one is undefined.
objc[7229]: Class RTCVideoCodecInfo is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x14639a3c8) and /b/s/w/ir/out/Debug/browser_tests (0x10c327630). One of the two will be used. Which one is undefined.
objc[7229]: Class RTCVideoEncoderQpThresholds is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x14639a418) and /b/s/w/ir/out/Debug/browser_tests (0x10c327680). One of the two will be used. Which one is undefined.
objc[7229]: Class RTCVideoEncoderSettings is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x14639a490) and /b/s/w/ir/out/Debug/browser_tests (0x10c3276f8). One of the two will be used. Which one is undefined.
objc[7229]: Class RTCVideoFrame is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x14639a4b8) and /b/s/w/ir/out/Debug/browser_tests (0x10c327720). One of the two will be used. Which one is undefined.
[7218:8455:0117/055343.026736:WARNING:notification_platform_bridge_mac.mm(522)] AlertNotificationService: XPC connection invalidated.
[7229:775:0117/055343.699272:ERROR:vt_video_encode_accelerator_mac.cc(513)]  VTCompressionSessionCreate failed: -12908
objc[7236]: Class RTCDispatcher is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x1534d22b0) and /b/s/w/ir/out/Debug/browser_tests (0x119451518). One of the two will be used. Which one is undefined.
objc[7237]: Class RTCDispatcher is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x1466d82b0) and /b/s/w/ir/out/Debug/browser_tests (0x10c656518). One of the two will be used. Which one is undefined.
objc[7236]: Class RTCEncodedImage is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x1534d2300) and /b/s/w/ir/out/Debug/browser_tests (0x119451568). One of the two will be used. Which one is undefined.
objc[7237]: Class RTCEncodedImage is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x1466d8300) and /b/s/w/ir/out/Debug/browser_tests (0x10c656568). One of the two will be used. Which one is undefined.
objc[7236]: Class RTCRtpFragmentationHeader is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x1534d2350) and /b/s/w/ir/out/Debug/browser_tests (0x1194515b8). One of the two will be used. Which one is undefined.
objc[7237]: Class RTCRtpFragmentationHeader is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x1466d8350) and /b/s/w/ir/out/Debug/browser_tests (0x10c6565b8). One of the two will be used. Which one is undefined.
objc[7236]: Class RTCVideoCapturer is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x1534d2378) and /b/s/w/ir/out/Debug/browser_tests (0x1194515e0). One of the two will be used. Which one is undefined.
objc[7237]: Class RTCVideoCapturer is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x1466d8378) and /b/s/w/ir/out/Debug/browser_tests (0x10c6565e0). One of the two will be used. Which one is undefined.
objc[7236]: Class RTCVideoCodecInfo is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x1534d23c8) and /b/s/w/ir/out/Debug/browser_tests (0x119451630). One of the two will be used. Which one is undefined.
objc[7237]: Class RTCVideoCodecInfo is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x1466d83c8) and /b/s/w/ir/out/Debug/browser_tests (0x10c656630). One of the two will be used. Which one is undefined.
objc[7236]: Class RTCVideoEncoderQpThresholds is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x1534d2418) and /b/s/w/ir/out/Debug/browser_tests (0x119451680). One of the two will be used. Which one is undefined.
objc[7237]: Class RTCVideoEncoderQpThresholds is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x1466d8418) and /b/s/w/ir/out/Debug/browser_tests (0x10c656680). One of the two will be used. Which one is undefined.
objc[7236]: Class RTCVideoEncoderSettings is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x1534d2490) and /b/s/w/ir/out/Debug/browser_tests (0x1194516f8). One of the two will be used. Which one is undefined.
objc[7237]: Class RTCVideoEncoderSettings is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x1466d8490) and /b/s/w/ir/out/Debug/browser_tests (0x10c6566f8). One of the two will be used. Which one is undefined.
objc[7236]: Class RTCVideoFrame is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x1534d24b8) and /b/s/w/ir/out/Debug/browser_tests (0x119451720). One of the two will be used. Which one is undefined.
objc[7237]: Class RTCVideoFrame is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x1466d84b8) and /b/s/w/ir/out/Debug/browser_tests (0x10c656720). One of the two will be used. Which one is undefined.
[7218:775:0117/055344.282755:WARNING:personal_data_manager.cc(487)] 0x7f9c43f9b9a0 refresh is done, notifying PersonalDataChanged
[7218:775:0117/055344.467691:WARNING:gaia_auth_fetcher.cc(881)] Could not reach Google Accounts servers: errno -11
objc[7241]: Class RTCDispatcher is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x148c0e2b0) and /b/s/w/ir/out/Debug/browser_tests (0x10eba4518). One of the two will be used. Which one is undefined.
objc[7241]: Class RTCEncodedImage is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x148c0e300) and /b/s/w/ir/out/Debug/browser_tests (0x10eba4568). One of the two will be used. Which one is undefined.
objc[7241]: Class RTCRtpFragmentationHeader is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x148c0e350) and /b/s/w/ir/out/Debug/browser_tests (0x10eba45b8). One of the two will be used. Which one is undefined.
objc[7241]: Class RTCVideoCapturer is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x148c0e378) and /b/s/w/ir/out/Debug/browser_tests (0x10eba45e0). One of the two will be used. Which one is undefined.
objc[7241]: Class RTCVideoCodecInfo is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x148c0e3c8) and /b/s/w/ir/out/Debug/browser_tests (0x10eba4630). One of the two will be used. Which one is undefined.
objc[7241]: Class RTCVideoEncoderQpThresholds is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x148c0e418) and /b/s/w/ir/out/Debug/browser_tests (0x10eba4680). One of the two will be used. Which one is undefined.
objc[7241]: Class RTCVideoEncoderSettings is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x148c0e490) and /b/s/w/ir/out/Debug/browser_tests (0x10eba46f8). One of the two will be used. Which one is undefined.
objc[7241]: Class RTCVideoFrame is implemented in both /b/s/w/ir/out/Debug/./libcontent.dylib (0x148c0e4b8) and /b/s/w/ir/out/Debug/browser_tests (0x10eba4720). One of the two will be used. Which one is undefined.
[7229:775:0117/055344.901463:WARNING:ca_layer_tree_coordinator.mm(55)] Blank frame: No overlays or CALayers
../../chrome/browser/browsing_data/browsing_data_remover_browsertest.cc:485: Failure
Expected equality of these values:
  expected
    Which is: 0
  GetCookiesTreeModelCount(model->GetRoot())
    Which is: 1
CookieTreeModel:
127.0.0.1
  Local storage 7

Most recent analysis shows this is no longer flaking; is there anything left to do?