Remove minimumLayoutDelay() and associated machinery

Source/core/page/FrameView.cpp

Index: Source/core/page/FrameView.cpp
diff --git a/Source/core/page/FrameView.cpp b/Source/core/page/FrameView.cpp
index 8ff98d3bef09f7fdc669210827a202239ef35394..44679fc6812b7aadb0e56fd2deb5f96d50d6bc8a 100644
--- a/Source/core/page/FrameView.cpp
+++ b/Source/core/page/FrameView.cpp
@@ -249,7 +249,6 @@ void FrameView::reset()
     m_borderY = 30;
     m_layoutTimer.stop();
     m_layoutRoot = 0;
-    m_delayedLayout = false;
     m_doFullRepaint = true;
     m_layoutSchedulingEnabled = true;
     m_inLayout = false;
@@ -880,7 +879,6 @@ void FrameView::layout(bool allowSubtree)
     TemporaryChange<bool> changeInProgrammaticScroll(m_inProgrammaticScroll, true);
 
     m_layoutTimer.stop();
-    m_delayedLayout = false;
     m_setNeedsLayoutWasDeferred = false;
 
     // we shouldn't enter layout() while painting
@@ -1893,14 +1891,10 @@ void FrameView::scheduleRelayout()
     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)
@@ -1945,12 +1939,10 @@ void FrameView::scheduleRelayoutOfSubtree(RenderObject* relayoutRoot)
             }
         }
     } 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);
     }
 }
 
@@ -1991,7 +1983,6 @@ void FrameView::unscheduleRelayout()
         return;
 
     m_layoutTimer.stop();
-    m_delayedLayout = false;
 }
 
 void FrameView::serviceScriptedAnimations(double monotonicAnimationStartTime)