Merge 299672 "Initialize |switch_profile_link_| in the constructor."

BUG=422482
TBR=sky@chromium.org

Review URL: https://codereview.chromium.org/639163003

Cr-Commit-Position: refs/heads/master@{#299672}
(cherry picked from commit d3319ba3dc0c86b3c64e1fd4b11f4429de52b8db)

Review URL: https://codereview.chromium.org/667413002

Cr-Commit-Position: refs/branch-heads/2171@{#227}
Cr-Branched-From: 267aeeb8d85c8503a7fd12bd14654b8ea78d3974-refs/heads/master@{#297060}
1 file changed