[Webkit-unassigned] [Bug 139657] New: Separate counted and hysteresis activities in PageThrottler

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=139657

            Bug ID: 139657
           Summary: Separate counted and hysteresis activities in
                    PageThrottler
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: barraclough at apple.com

Currently all activities funnel into a common hysteresis mechanism, the result of which is combined with the visually idle state, the result of which in turn drives a UserActivity::Impl.

This is a first refactoring towards moving the UserActivity out to WebKit2. Use m_hysteresis only of the impulse activities (plugin evaluation, user input), and flatten the three types of activities (impulse, counted, ViewState) to all directly control a UserActivity. Switch from a UserActivity::Impl to a UserActivity since this will provide hysteresis for media activity.

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