Disabling high efficiency chip dialog button through the dialog model

Leveraging the new additions to dialog model to disable the cancel
button. Additionally, changing the behavior to disabling the button
based on presence of the host rule in the exceptions list. This CL also
contains the change to move the memory savings chart before the dialog
body text as requested by UX.

Change-Id: I992efb2935bc92f1ce25900af12d44ffbd513ce4
Bug: 1424224
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4582681


Code-Coverage: Findit <findit-for-me@appspot.gserviceaccount.com>
Reviewed-by: Alison Gale <agale@chromium.org>
Commit-Queue: Eshwar Stalin <estalin@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1152635}