Merge to M40: Make sure Legacy HWND is created and has proper bounds on bounds change.

BUG=436218

Review URL: https://codereview.chromium.org/771353004

Cr-Commit-Position: refs/heads/master@{#307160}
(cherry picked from commit ffd2bddecb7349d0595dd87e802e08e37f18dc28)

Review URL: https://codereview.chromium.org/796243002

Cr-Commit-Position: refs/branch-heads/2214@{#274}
Cr-Branched-From: 03655fd3f6d72165dc3c9bd2c89807305316fe6c-refs/heads/master@{#303346}
1 file changed