[iOS] Lazy load toolbar button image and subviews Most of the toolbar buttons are hidden in the specific user interface size class. This CL attempts to lazily load the toolbar button images and subviews when they are visible to improve startup latency. Instruments measurements: https://docs.google.com/document/d/1gyVFWPn2WDPIyi5zY1WFUjhsL2Z26RsUyHLNw87lIWE/edit?usp=sharing Bug: 1515588 Change-Id: I55d1e3153de55ca02fdf2a00e0943da8a1075d51 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5366912 Reviewed-by: Gauthier Ambard <gambard@chromium.org> Commit-Queue: Zengfeng Ye <zenye@microsoft.com> Cr-Commit-Position: refs/heads/main@{#1274723}
ChromiumChromium is an open-source browser project that aims to build a safer, faster, and more stable way for all users to experience the web.
The project's web site is https://www.chromium.org.
To check out the source code locally, don't use git clone! Instead, follow the instructions on how to get the code.
Documentation in the source is rooted in docs/README.md.
Learn how to Get Around the Chromium Source Code Directory Structure.
For historical reasons, there are some small top level directories. Now the guidance is that new top level directories are for product (e.g. Chrome, Android WebView, Ash). Even if these products have multiple executables, the code should be in subdirectories of the product.
If you found a bug, please file it at https://crbug.com/new.