GitLab

Disable histogram persistence during uninstall since there's neither a directory
in which to write them nor a browser to subsequently upload them. This allows
to add LOG(ERROR) without breaking the installation tests when it detects the
storage directory does not exist.

Also, do not attempt to store histograms from setup.exe executions dedicated to
crashpad. Otherwise, this will trigger LOG(ERROR) in the destructor of class
PersistentHistogramStorage.

Bug: 734095
Change-Id: Iffff0fab25eedb7f934144802e805ba2d047a42a
Reviewed-on: https://chromium-review.googlesource.com/987541Reviewed-by: Ilya Sherman <isherman@chromium.org>
Reviewed-by: Greg Thompson <grt@chromium.org>
Commit-Queue: Xi Cheng <chengx@chromium.org>
Cr-Commit-Position: refs/heads/master@{#547957}