weifang - could you confirm we dont look at the results from analytics? We will have a hole in our data for a while (replacing the things it measured with UMA is not straightforward), but we will get that data at a later date :)

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/25af83ddf8c991a6adeee3d05dfb0c06a1cd6d64

commit 25af83ddf8c991a6adeee3d05dfb0c06a1cd6d64
Author: Sasha Morrissey <sashab@chromium.org>
Date: Fri May 18 06:56:00 2018

Disable Google Analytics in the File Manager

This is a small fix that disables Google Analytics in the File Manager
by removing the call to resolve the callback. Calling the Deferred
object in any way causes an XHR request that causes the file picker to
turn white, so not calling it leaves the Filter unresolved which means
the Analytics server is never contacted (and hence the bug doesn't
happen).

Bug:  842880 , 844280 
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: Ie525a88689985d2df1028fc1ba87f954fe158caf
Reviewed-on: https://chromium-review.googlesource.com/1065530
Commit-Queue: Sasha Morrissey <sashab@chromium.org>
Reviewed-by: Joel Hockey <joelhockey@chromium.org>
Cr-Commit-Position: refs/heads/master@{#559818}
[modify] https://crrev.com/25af83ddf8c991a6adeee3d05dfb0c06a1cd6d64/chrome/browser/chromeos/file_manager/file_manager_jstest.cc
[modify] https://crrev.com/25af83ddf8c991a6adeee3d05dfb0c06a1cd6d64/ui/file_manager/file_manager/common/js/metrics.js

Confirmed that it makes sense to disable Google Analytics. Should we create a bug to track replacement UMAs for Cloud Import? Thanks Sasha!!

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ebe9aac2c553a0e21ad584fcc8217d0524967884

commit ebe9aac2c553a0e21ad584fcc8217d0524967884
Author: Sasha Morrissey <sashab@chromium.org>
Date: Sat May 19 02:09:09 2018

Disable Google Analytics in the File Manager

This is a small fix that disables Google Analytics in the File Manager
by removing the call to resolve the callback. Calling the Deferred
object in any way causes an XHR request that causes the file picker to
turn white, so not calling it leaves the Filter unresolved which means
the Analytics server is never contacted (and hence the bug doesn't
happen).

Tbr: joelhockey@chromium.org
Bug:  842880 , 844280 
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: Ie525a88689985d2df1028fc1ba87f954fe158caf
Reviewed-on: https://chromium-review.googlesource.com/1065530
Commit-Queue: Sasha Morrissey <sashab@chromium.org>
Reviewed-by: Joel Hockey <joelhockey@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#559818}(cherry picked from commit 25af83ddf8c991a6adeee3d05dfb0c06a1cd6d64)
Reviewed-on: https://chromium-review.googlesource.com/1065692
Reviewed-by: Sasha Morrissey <sashab@chromium.org>
Cr-Commit-Position: refs/branch-heads/3396@{#652}
Cr-Branched-From: 9ef2aa869bc7bc0c089e255d698cca6e47d6b038-refs/heads/master@{#550428}
[modify] https://crrev.com/ebe9aac2c553a0e21ad584fcc8217d0524967884/chrome/browser/chromeos/file_manager/file_manager_jstest.cc
[modify] https://crrev.com/ebe9aac2c553a0e21ad584fcc8217d0524967884/ui/file_manager/file_manager/common/js/metrics.js

Yup; removing analytics properly & replacing the UMAs it measured is being tracked in  issue 646705 .