dcd4117a44
Add new metrics to properly distinguish the *three* distinct cases we can encounter while creating a WebView instance. The existing metrics relied on "has the global Chromium initialization already run" to distinguish "cold" and "warm" cases, and these cases were being interpreted as "whether this is the first instance of WebView or not". There are actually three cases: it's possible for the global Chromium initialization to have already run *before* the first WebView was constructed. The existing metrics categorized this as "cold", but the first instance still takes longer to construct than subsequent instances even in this case, making it hard to interpret the metrics correctly. Instead, define three separate histograms for the three cases. We continue to log the old histograms as well for now to allow for cross-version comparisons. The descriptions of the existing metrics are also updated to clarify their limitations and suggest consulting the new metrics instead. Bug: b:373630656 Change-Id: Id927276f2bb6327bec3764e1fe6dd6abb2ffb1ef Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6108730 Reviewed-by: Mark Pearson <mpearson@chromium.org> Commit-Queue: Richard (Torne) Coles <torne@chromium.org> Reviewed-by: Nate Fischer <ntfschr@chromium.org> Auto-Submit: Richard (Torne) Coles <torne@chromium.org> Reviewed-by: Oksana Zhuravlova <oksamyt@chromium.org> Cr-Commit-Position: refs/heads/main@{#1420668}
Android WebView
Android WebView is an Android system component for displaying web content.
WebView (and
the related Android classes) are implemented by the code in the
//android_webview/ folder.
This directory contains the Android WebView implementation, as well as the implementation for the AndroidX Webkit support library.
Overview for Chromium team members and contributors
Please see WebView Architecture.
Want to use WebView in an Android app?
Please consult our API documentation and app development guides:
Want to build and install WebView on a device?
See our Chromium developer documentation.
Public mailing lists
- android-webview-dev@chromium.org: external discussion group for WebView developers and interested community members.
- android-webview-reviews@chromium.org: subscribe to code reviews affecting Android WebView code.