Layout:Resizable Panel

Build 2667 on fix-layout-issues
Reviewing disabled
Baseline History
Build 266740edfd9 current baseline
Current build. Accepted by Andrey Yamanov.
Build 266609d9c16
Ancestor build. There were unaccepted changes, so this was not used as a baseline.
Build 263787e00bb
Inherited baseline identical to build 2606
Build 26065e26c44
Accepted by Andrey Yamanov.
Build 2570f6f0c64
Accepted by Andrey Yamanov.
Build 2566db506fa
Auto-accepted
Commenting is disabled because there's a newer build on this branch