Remove minimum layout delay

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 205 matching lines @@
         renderer->setWidget(0);
 }
 
 void FrameView::reset()
 {
     m_cannotBlitToWindow = false;
     m_isOverlapped = false;
     m_contentIsOpaque = false;
     m_hasPendingLayout = false;
     m_layoutSubtreeRoot = 0;
-    m_delayedLayout = false;
     m_doFullRepaint = true;
     m_layoutSchedulingEnabled = true;
     m_inPerformLayout = false;
     m_canRepaintDuringPerformLayout = false;
     m_doingPreLayoutStyleUpdate = false;
     m_inSynchronousPostLayout = false;
     m_layoutCount = 0;
     m_nestedLayoutCount = 0;
     m_postLayoutTasksTimer.stop();
     m_updateWidgetsTimer.stop();
@@ skipping 666 matching lines @@
     TRACE_EVENT0("webkit", "FrameView::layout");
     TRACE_EVENT_SCOPED_SAMPLING_STATE("Blink", "Layout");
 
     // Protect the view from being deleted during layout (in recalcStyle)
     RefPtr<FrameView> protector(this);
 
     // Every scroll that happens during layout is programmatic.
     TemporaryChange<bool> changeInProgrammaticScroll(m_inProgrammaticScroll, true);
 
     m_hasPendingLayout = false;
-    m_delayedLayout = false;
 
     // we shouldn't enter layout() while painting
     ASSERT(!isPainting());
     if (isPainting())
         return;
 
     // Store the current maximal outline size to use when computing the old/new
     // outline rects for repainting.
     renderView()->setOldMaximalOutlineSize(renderView()->maximalOutlineSize());
 
@@ skipping 877 matching lines @@
         m_layoutSubtreeRoot = 0;
     }
     if (!m_layoutSchedulingEnabled)
         return;
     if (!needsLayout())
         return;
     if (!m_frame->document()->shouldScheduleLayout())
         return;
     InspectorInstrumentation::didInvalidateLayout(m_frame.get());
 
-    int delay = m_frame->document()->minimumLayoutDelay();
-    if (m_hasPendingLayout && m_delayedLayout && !delay)
-        unscheduleRelayout();
     if (m_hasPendingLayout)
         return;
-
-    m_delayedLayout = delay != 0;
     m_hasPendingLayout = true;
     scheduleAnimation();
 }
 
 static bool isObjectAncestorContainerOf(RenderObject* ancestor, RenderObject* descendant)
 {
     for (RenderObject* r = descendant; r; r = r->container()) {
         if (r == ancestor)
             return true;
     }
@@ skipping 26 matching lines @@
             } else {
                 // Just do a full relayout
                 if (isSubtreeLayout())
                     m_layoutSubtreeRoot->markContainingBlocksForLayout(false);
                 m_layoutSubtreeRoot = 0;
                 relayoutRoot->markContainingBlocksForLayout(false);
                 InspectorInstrumentation::didInvalidateLayout(m_frame.get());
             }
         }
     } else if (m_layoutSchedulingEnabled) {
-        int delay = m_frame->document()->minimumLayoutDelay();
         m_layoutSubtreeRoot = relayoutRoot;
         ASSERT(!m_layoutSubtreeRoot->container() || !m_layoutSubtreeRoot->container()->needsLayout());
         InspectorInstrumentation::didInvalidateLayout(m_frame.get());
-        m_delayedLayout = delay != 0;
         m_hasPendingLayout = true;
         scheduleAnimation();
     }
 }
 
 bool FrameView::layoutPending() const
 {
     return m_hasPendingLayout;
 }
 
 bool FrameView::needsLayout() const
 {
     // This can return true in cases where the document does not have a body yet.
     // Document::shouldScheduleLayout takes care of preventing us from scheduling
     // layout in that case.
 
     RenderView* renderView = this->renderView();
     return layoutPending()
         || (renderView && renderView->needsLayout())
         || isSubtreeLayout();
 }
 
 void FrameView::setNeedsLayout()
 {
     if (RenderView* renderView = this->renderView())
         renderView->setNeedsLayout();
 }
 
-void FrameView::unscheduleRelayout()
-{
-    if (!m_hasPendingLayout)
-        return;
-
-    m_hasPendingLayout = false;
-    m_delayedLayout = false;
-}
-
 void FrameView::serviceScriptedAnimations(double monotonicAnimationStartTime)
 {
     for (RefPtr<Frame> frame = m_frame; frame; frame = frame->tree().traverseNext()) {
         frame->view()->serviceScrollAnimations();
         if (!RuntimeEnabledFeatures::webAnimationsCSSEnabled())
             frame->animation().serviceAnimations();
 
         DocumentAnimations::serviceOnAnimationFrame(*frame->document(), monotonicAnimationStartTime);
     }
 
@@ skipping 1321 matching lines @@
 void FrameView::willRemoveScrollbar(Scrollbar* scrollbar, ScrollbarOrientation orientation)
 {
     ScrollableArea::willRemoveScrollbar(scrollbar, orientation);
     if (AXObjectCache* cache = axObjectCache()) {
         cache->remove(scrollbar);
         cache->handleScrollbarUpdate(this);
     }
 }
 
 } // namespace WebCore