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Context:
In some cases, CPRService passes ChromeActivity to PaymentUiService when
PUiService really needs Context and WindowAndroid. So this CL changes
to provides Context and WindowAndroid to these cases. Doing so can
reduce Chrome features' dependencies on ChromeActivity.

Changes:
* CPRService provides Context and WindowAndroid instead of
  ChromeActivity to methods when applicable.

Bug: 1155788, 1140340, 1140344
Change-Id: Ib934dbbdba25bfc278ce13232d59ef3c4acf2131
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2577956
Commit-Queue: Liquan (Max) Gu <maxlg@chromium.org>
Reviewed-by: Rouslan Solomakhin <rouslan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#834987}