Chromium change: https://source.chromium.org/chromium/chromium/src/+/5214142978dc8e29bf94564a9949636c987a1d4c commit 5214142978dc8e29bf94564a9949636c987a1d4c Author: Calder Kitagawa <ckitagawa@chromium.org> Date: Mon Mar 16 12:17:37 2026 -0700 [BottomBar] Expose capability to control the color and scroll behavior Per comments on BottomControlsLayer interface it is already possible to dynamically update the color and scroll behavior, then make a call to request an update. This CL exposes mechanisms to control the BottomControlsContentDelegate implementation and provides a callback to BottomBarContainerCoordinator to update the render state. Bug: 492262214 Change-Id: I31d265c95b5771c121e120d2bdf1c4cd096c8a1e Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7664742 Commit-Queue: Calder Kitagawa <ckitagawa@chromium.org> Reviewed-by: Madhav Pruthi <madhavpruthi@google.com> Reviewed-by: Dan Polanco <polardz@google.com> Auto-Submit: Calder Kitagawa <ckitagawa@chromium.org> Commit-Queue: Madhav Pruthi <madhavpruthi@google.com> Cr-Commit-Position: refs/heads/main@{#1600048}