Fire load complete notifications on Mac even when page loads quickly.

Fire load complete notifications on Mac even when page loads quickly.

This broke with change r477889 (https://codereview.chromium.org/2917363002)
because it fired load complete notifications when the "loaded" flag
changes from false to true, but it failed to handle cases where we
swap in a new tree root that's already loaded, which happens with
local pages and data urls.

BUG=733334, 699438
Review-Url: https://codereview.chromium.org/2961913002
Cr-Commit-Position: refs/heads/master@{#482818}
Committed: https://chromium.googlesource.com/chromium/src/+/1a48b88399b0324a2cc828db06f375c9ed3a777c

[dmazzoni, 2017-06-27 23:04:33]

The CQ bit was checked by dmazzoni@chromium.org to run a CQ dry run

[dmazzoni, 2017-06-27 23:04:54]

dmazzoni@chromium.org changed reviewers:
+ nektar@chromium.org

[commit-bot: I haz the power, 2017-06-27 23:04:58]

Dry run: CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-06-27 23:34:10]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-06-27 23:34:11]

Dry run: This issue passed the CQ dry run.

[nektarios, 2017-06-28 00:27:45]

The CQ bit was checked by nektar@chromium.org

[nektarios, 2017-06-28 00:27:45]

lgtm

[commit-bot: I haz the power, 2017-06-28 00:28:15]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-06-28 00:32:58]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1498609665077430, "parent_rev":
"db7be2a305a4c064915a1e64773ebc78a0f55618", "commit_rev":
"1a48b88399b0324a2cc828db06f375c9ed3a777c"}

[commit-bot: I haz the power, 2017-06-28 00:33:16]

Description was changed from

==========
Fire load complete notifications on Mac even when page loads quickly.

This broke with change r477889 (https://codereview.chromium.org/2917363002)
because it fired load complete notifications when the "loaded" flag
changes from false to true, but it failed to handle cases where we
swap in a new tree root that's already loaded, which happens with
local pages and data urls.

BUG=733334,699438
==========

to

==========
Fire load complete notifications on Mac even when page loads quickly.

This broke with change r477889 (https://codereview.chromium.org/2917363002)
because it fired load complete notifications when the "loaded" flag
changes from false to true, but it failed to handle cases where we
swap in a new tree root that's already loaded, which happens with
local pages and data urls.

BUG=733334,699438

Review-Url: https://codereview.chromium.org/2961913002
Cr-Commit-Position: refs/heads/master@{#482818}
Committed:
https://chromium.googlesource.com/chromium/src/+/1a48b88399b0324a2cc828db06f3...
==========

[commit-bot: I haz the power, 2017-06-28 00:33:18]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/1a48b88399b0324a2cc828db06f3...