Merge "INPUT element: Do not dispatch events in detachLayoutTree()." to M55 branch.

When a color chooser is closed, we dispatches a 'change' event asynchronously.
Some tests need to be updated due to this behavior change.

BUG=658535

Review-Url: https://codereview.chromium.org/2447653002
Cr-Commit-Position: refs/heads/master@{#427286}
(cherry picked from commit fbe37c7239e4a6e75f12c0d35e60987a6aa75ee0)

Review URL: https://codereview.chromium.org/2458743004 .

Cr-Commit-Position: refs/branch-heads/2883@{#353}
Cr-Branched-From: 614d31daee2f61b0180df403a8ad43f20b9f6dd7-refs/heads/master@{#423768}
9 files changed