Remove minimumLayoutDelay() and associated machinery

Source/core/page/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 231 matching lines @@
 
 void FrameView::reset()
 {
     m_cannotBlitToWindow = false;
     m_isOverlapped = false;
     m_contentIsOpaque = false;
     m_borderX = 30;
     m_borderY = 30;
     m_layoutTimer.stop();
     m_layoutRoot = 0;
-    m_delayedLayout = false;
     m_doFullRepaint = true;
     m_layoutSchedulingEnabled = true;
     m_inLayout = false;
     m_doingPreLayoutStyleUpdate = false;
     m_inSynchronousPostLayout = false;
     m_layoutCount = 0;
     m_nestedLayoutCount = 0;
     m_postLayoutTasksTimer.stop();
     m_firstLayout = true;
     m_firstLayoutCallbackPending = false;
@@ skipping 610 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_layoutTimer.stop();
-    m_delayedLayout = false;
     m_setNeedsLayoutWasDeferred = false;
 
     // we shouldn't enter layout() while painting
     ASSERT(!isPainting());
     if (isPainting())
         return;
 
     InspectorInstrumentationCookie cookie = InspectorInstrumentation::willLayout(m_frame.get());
 
     if (!allowSubtree && m_layoutRoot) {
@@ skipping 992 matching lines @@
         return;
     if (!m_frame->document()->shouldScheduleLayout())
         return;
     InspectorInstrumentation::didInvalidateLayout(m_frame.get());
 
     // When frame seamless is enabled, the contents of the frame could affect the layout of the parent frames.
     // Also invalidate parent frame starting from the owner element of this frame.
     if (m_frame->ownerRenderer() && frame()->document()->shouldDisplaySeamlesslyWithParent())
         m_frame->ownerRenderer()->setNeedsLayout(true, MarkContainingBlockChain);
 
-    int delay = m_frame->document()->minimumLayoutDelay();
-    if (m_layoutTimer.isActive() && m_delayedLayout && !delay)
-        unscheduleRelayout();
     if (m_layoutTimer.isActive())
         return;
 
-    m_delayedLayout = delay != 0;
-    m_layoutTimer.startOneShot(delay * 0.001);
+    m_layoutTimer.startOneShot(0);
 }
 
 static bool isObjectAncestorContainerOf(RenderObject* ancestor, RenderObject* descendant)
 {
     for (RenderObject* r = descendant; r; r = r->container()) {
         if (r == ancestor)
             return true;
     }
     return false;
 }
@@ skipping 24 matching lines @@
             } else {
                 // Just do a full relayout
                 if (m_layoutRoot)
                     m_layoutRoot->markContainingBlocksForLayout(false);
                 m_layoutRoot = 0;
                 relayoutRoot->markContainingBlocksForLayout(false);
                 InspectorInstrumentation::didInvalidateLayout(m_frame.get());
             }
         }
     } else if (m_layoutSchedulingEnabled) {
-        int delay = m_frame->document()->minimumLayoutDelay();
         m_layoutRoot = relayoutRoot;
         ASSERT(!m_layoutRoot->container() || !m_layoutRoot->container()->needsLayout());
         InspectorInstrumentation::didInvalidateLayout(m_frame.get());
-        m_delayedLayout = delay != 0;
-        m_layoutTimer.startOneShot(delay * 0.001);
+        m_layoutTimer.startOneShot(0);
     }
 }
 
 bool FrameView::layoutPending() const
 {
     return m_layoutTimer.isActive();
 }
 
 bool FrameView::needsLayout() const
 {
@@ skipping 20 matching lines @@
     if (RenderView* renderView = this->renderView())
         renderView->setNeedsLayout(true);
 }
 
 void FrameView::unscheduleRelayout()
 {
     if (!m_layoutTimer.isActive())
         return;
 
     m_layoutTimer.stop();
-    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();
         if (RuntimeEnabledFeatures::webAnimationsEnabled())
             frame->document()->timeline()->serviceAnimations(monotonicAnimationStartTime);
@@ skipping 1368 matching lines @@
 }
 
 AXObjectCache* FrameView::axObjectCache() const
 {
     if (frame() && frame()->document())
         return frame()->document()->existingAXObjectCache();
     return 0;
 }
 
 } // namespace WebCore