[webkit-changes] [WebKit/WebKit] f8bdcd: REGRESSION(271261 at main): [GTK][WPE] Rendering brea...

[Vitaly Dyachkov]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: f8bdcd70b26726a069f6cb96e9ce7a24971f1686
      https://github.com/WebKit/WebKit/commit/f8bdcd70b26726a069f6cb96e9ce7a24971f1686
  Author: Vitaly Dyachkov <vitaly at igalia.com>
  Date:   2024-01-30 (Tue, 30 Jan 2024)

  Changed paths:
    M LayoutTests/platform/wpe/TestExpectations
    M Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/LayerTreeHost.cpp

  Log Message:
  -----------
  REGRESSION(271261 at main): [GTK][WPE] Rendering breaks after back/forward navigation
https://bugs.webkit.org/show_bug.cgi?id=266536

Reviewed by Carlos Garcia Campos.

We should not prevent flushing layer changes when the compositing
coorinator doesn't have associated root compositing layer.

Doing so prevents a page to be rendered after restoring from the
BackForwardCache.

The root compositing layer will be created later when needed.

* LayoutTests/platform/wpe/TestExpectations:
* Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/LayerTreeHost.cpp:
(WebKit::LayerTreeHost::layerFlushTimerFired):

Canonical link: https://commits.webkit.org/273750@main