Revert "Move on-demand update checks from the FILE thread to the blocking pool."

Revert "Move on-demand update checks from the FILE thread to the blocking pool."

This reverts commit 12cdde78e334c9380bb0b07a85a1198d0094cfe0 (and
a80b84bf1ce305677f7eb99f0a9dbbff8904aa2f since it only impacted the new
code in the aforementioned commit).

Reason for revert: Threads in the blocking pool do not pump Windows
messages, which is required for correct functioning of the global
interface table; see https://crbug.com/644687.

BUG=2462, 644687
TBR=pkasting@chromium.org

Review-Url: https://codereview.chromium.org/2318073002
Cr-Commit-Position: refs/heads/master@{#416918}
(cherry picked from commit 9f391dd808620d168b5ef7587799c26d734b324e)
TBR=grt@chromium.org

Committed: https://chromium.googlesource.com/chromium/src/+/28da2248ab0ce98128a63fb2f2a416ee2a6eb11b

[grt (UTC plus 2), 2016-09-09 11:56:06]

Description was changed from

==========
Revert "Move on-demand update checks from the FILE thread to the blocking pool."

This reverts commit 12cdde78e334c9380bb0b07a85a1198d0094cfe0 (and
a80b84bf1ce305677f7eb99f0a9dbbff8904aa2f since it only impacted the new
code in the aforementioned commit).

Reason for revert: Threads in the blocking pool do not pump Windows
messages, which is required for correct functioning of the global
interface table; see https://crbug.com/644687.

BUG=2462,644687
TBR=pkasting@chromium.org

Review-Url: https://codereview.chromium.org/2318073002
Cr-Commit-Position: refs/heads/master@{#416918}
(cherry picked from commit 9f391dd808620d168b5ef7587799c26d734b324e)
TBR=grt@chromium.org
==========

to

==========
Revert "Move on-demand update checks from the FILE thread to the blocking pool."

This reverts commit 12cdde78e334c9380bb0b07a85a1198d0094cfe0 (and
a80b84bf1ce305677f7eb99f0a9dbbff8904aa2f since it only impacted the new
code in the aforementioned commit).

Reason for revert: Threads in the blocking pool do not pump Windows
messages, which is required for correct functioning of the global
interface table; see https://crbug.com/644687.

BUG=2462,644687
TBR=pkasting@chromium.org

Review-Url: https://codereview.chromium.org/2318073002
Cr-Commit-Position: refs/heads/master@{#416918}
(cherry picked from commit 9f391dd808620d168b5ef7587799c26d734b324e)
TBR=grt@chromium.org

Committed:
https://chromium.googlesource.com/chromium/src/+/28da2248ab0ce98128a63fb2f2a4...
==========

[grt (UTC plus 2), 2016-09-09 11:56:08]

Committed patchset #1 (id:1) manually as
28da2248ab0ce98128a63fb2f2a416ee2a6eb11b.