Do not elevate to register Chrome for system-level Win7 installs.

Do not elevate to register Chrome for system-level Win7 installs.

On Windows 7, browsers must be registered with the OS in HKLM. Chrome's
installer takes care of this during install/update for system-level
installs. For user-level installs, however, Chrome must pop a UAC prompt
to have setup.exe run at high integrity for this registration.

This change suppresses the elevate-to-register codepath for system-level
installs on Windows 7 since this is the installer's responsibility. This
prevents over-prompting some users (see the bug for details) at the risk
of not prompting users for whom Chrome truly isn't registered. If those
users are running a properly updating Chrome, its registration will be
repaired on the next update. If they are not running an updating Chrome,
they have bigger problems.

BUG=717913
R=gab@chromium.org

Review-Url: https://codereview.chromium.org/2878953003
Cr-Original-Commit-Position: refs/heads/master@{#472750}
Review-Url: https://codereview.chromium.org/2910743002 .
Cr-Commit-Position: refs/branch-heads/3071@{#706}
Cr-Branched-From: a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed: https://chromium.googlesource.com/chromium/src/+/bf573c90784bf148baf921734b2f48eb660b37a8

[grt (UTC plus 2), 2017-05-26 20:41:38]

Description was changed from

==========
Do not elevate to register Chrome for system-level Win7 installs.

On Windows 7, browsers must be registered with the OS in HKLM. Chrome's
installer takes care of this during install/update for system-level
installs. For user-level installs, however, Chrome must pop a UAC prompt
to have setup.exe run at high integrity for this registration.

This change suppresses the elevate-to-register codepath for system-level
installs on Windows 7 since this is the installer's responsibility. This
prevents over-prompting some users (see the bug for details) at the risk
of not prompting users for whom Chrome truly isn't registered. If those
users are running a properly updating Chrome, its registration will be
repaired on the next update. If they are not running an updating Chrome,
they have bigger problems.

BUG=717913
R=gab@chromium.org

Review-Url: https://codereview.chromium.org/2878953003
Cr-Commit-Position: refs/heads/master@{#472750}
(cherry picked from commit 31546fb25253afc574bf366d92ef20790c7d418c)
==========

to

==========
Do not elevate to register Chrome for system-level Win7 installs.

On Windows 7, browsers must be registered with the OS in HKLM. Chrome's
installer takes care of this during install/update for system-level
installs. For user-level installs, however, Chrome must pop a UAC prompt
to have setup.exe run at high integrity for this registration.

This change suppresses the elevate-to-register codepath for system-level
installs on Windows 7 since this is the installer's responsibility. This
prevents over-prompting some users (see the bug for details) at the risk
of not prompting users for whom Chrome truly isn't registered. If those
users are running a properly updating Chrome, its registration will be
repaired on the next update. If they are not running an updating Chrome,
they have bigger problems.

BUG=717913
R=gab@chromium.org

Review-Url: https://codereview.chromium.org/2878953003
Cr-Original-Commit-Position: refs/heads/master@{#472750}
Review-Url: https://codereview.chromium.org/2910743002 .
Cr-Commit-Position: refs/branch-heads/3071@{#706}
Cr-Branched-From:
a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed:
https://chromium.googlesource.com/chromium/src/+/bf573c90784bf148baf921734b2f...
==========

[grt (UTC plus 2), 2017-05-26 20:41:41]

Committed patchset #1 (id:1) manually as
bf573c90784bf148baf921734b2f48eb660b37a8.

[gab, 2017-05-31 14:56:49]

lgtm