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This CL is used to add profile_ as the AppServiceProxy class member
variable, as profile_ will be used to create the Uninstall_dialog,
which is created by crrev.com/c/1833024.

BUG=1009248

Change-Id: I7ec432dafbf4a58a01f5f3d3114dacea19e1fb5b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1837554Reviewed-by: Nigel Tao <nigeltao@chromium.org>
Commit-Queue: Nancy Wang <nancylingwang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#702688}