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This is a generic component for making GET and POST requests and supports
authentication.

Error reporting is not included which will be added in a separate patch.

Bug: 985015
Change-Id: I42f4ee93c680be26e9bbe388ba52808c915532d3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1706874
Commit-Queue: David Maunder <davidjm@chromium.org>
Reviewed-by: Tommy Nyquist <nyquist@chromium.org>
Reviewed-by: Yusuf Ozuysal <yusufo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#692041}