[SPInvalidation] Update paint properties of frame subtree when unthrottled

third_party/WebKit/Source/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 4598 matching lines @@
       scrollingCoordinator->notifyGeometryChanged();
     // Start ticking animation frames again if necessary.
     if (page())
       page()->animator().scheduleVisualUpdate(m_frame.get());
     // Force a full repaint of this frame to ensure we are not left with a
     // partially painted version of this frame's contents if we skipped
     // painting them while the frame was throttled.
     LayoutViewItem layoutViewItem = this->layoutViewItem();
     if (!layoutViewItem.isNull())
       layoutViewItem.invalidatePaintForViewAndCompositedLayers();
+    // Also need to update all paint properties that might be skipped while
+    // the frame was throttled.
+    setSubtreeNeedsPaintPropertyUpdate();
   }
 
   bool hasHandlers = m_frame->host() &&
                      m_frame->host()->eventHandlerRegistry().hasEventHandlers(
                          EventHandlerRegistry::TouchStartOrMoveEventBlocking);
   if (wasThrottled != canThrottleRendering() && scrollingCoordinator &&
       hasHandlers)
     scrollingCoordinator->touchEventTargetRectsDidChange();
 
   if (m_frame->frameScheduler()) {
@@ skipping 264 matching lines @@
        reason < MainThreadScrollingReason::kMainThreadScrollingReasonCount;
        ++reason) {
     if (m_mainThreadScrollingReasonsCounter[reason] > 0) {
       reasons |= 1 << (reason - 1);
     }
   }
   return reasons;
 }
 
 }  // namespace blink