The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/336ea2c3ef2261939ee3be7b92da32896343249c

commit 336ea2c3ef2261939ee3be7b92da32896343249c
Author: mcnee <mcnee@chromium.org>
Date: Tue May 23 22:51:19 2017

Don't compile code for desktop zoom or GuestViews on mobile platforms.

Since desktop zoom is not used on mobile, we can remove the host zoom
settings, zoom level management, and related code from mobile builds.

GuestViews are also not needed on mobile, so we remove them as well.

BUG= 719658 

Review-Url: https://codereview.chromium.org/2874833002
Cr-Commit-Position: refs/heads/master@{#474093}

[modify] https://crrev.com/336ea2c3ef2261939ee3be7b92da32896343249c/android_webview/browser/aw_browser_context.cc
[modify] https://crrev.com/336ea2c3ef2261939ee3be7b92da32896343249c/android_webview/browser/aw_browser_context.h
[modify] https://crrev.com/336ea2c3ef2261939ee3be7b92da32896343249c/chrome/browser/BUILD.gn
[modify] https://crrev.com/336ea2c3ef2261939ee3be7b92da32896343249c/chrome/browser/profiles/off_the_record_profile_impl.cc
[modify] https://crrev.com/336ea2c3ef2261939ee3be7b92da32896343249c/chrome/browser/profiles/off_the_record_profile_impl.h
[modify] https://crrev.com/336ea2c3ef2261939ee3be7b92da32896343249c/chrome/browser/profiles/profile.cc
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[modify] https://crrev.com/336ea2c3ef2261939ee3be7b92da32896343249c/chrome/browser/profiles/profile_impl.cc
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[modify] https://crrev.com/336ea2c3ef2261939ee3be7b92da32896343249c/chrome/browser/profiles/profile_io_data.cc
[modify] https://crrev.com/336ea2c3ef2261939ee3be7b92da32896343249c/chrome/browser/task_manager/web_contents_tags.cc
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[modify] https://crrev.com/336ea2c3ef2261939ee3be7b92da32896343249c/content/browser/download/download_manager_impl_unittest.cc
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[modify] https://crrev.com/336ea2c3ef2261939ee3be7b92da32896343249c/content/public/browser/BUILD.gn
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