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This CL adds chrome layer code to register to Chime. The actual
implementation is in an Android DFM in downstream.

The code is set up according to new modulization effort, that
chrome/browser/notifications/chime/android is self contained.

Bug: 1013386
Change-Id: Iafc4269e1597af30af624e9772c6a38edcb4e5a9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1874576
Commit-Queue: Xing Liu <xingliu@chromium.org>
Reviewed-by: David Trainor <dtrainor@chromium.org>
Cr-Commit-Position: refs/heads/master@{#709605}