Properly shrink stretched flexbox children on relayout

Source/core/html/shadow/SliderThumbElement.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 110 matching lines @@
         if (offsetFromCenter < 0)
             trackHeight = -2 * offsetFromCenter;
         else {
             int tickLength = RenderTheme::theme().sliderTickSize().height();
             trackHeight = 2 * (offsetFromCenter + tickLength);
         }
         float zoomFactor = style()->effectiveZoom();
         if (zoomFactor != 1.0)
             trackHeight *= zoomFactor;
 
+        // FIXME: The trackHeight should have been added before updateLogicalHeight was called to avoid this hack.
+        updateIntrinsicContentLogicalHeight(trackHeight);
+
         RenderBox::computeLogicalHeight(trackHeight, logicalTop, computedValues);
         return;
     }
     if (isVertical)
         logicalHeight = RenderSlider::defaultTrackLength;
+
+    // FIXME: The trackHeight should have been added before updateLogicalHeight was called to avoid this hack.
+    updateIntrinsicContentLogicalHeight(logicalHeight);
+
     RenderBox::computeLogicalHeight(logicalHeight, logicalTop, computedValues);
 }
 
 void RenderSliderContainer::layout()
 {
     HTMLInputElement* input = toHTMLInputElement(node()->shadowHost());
     bool isVertical = hasVerticalAppearance(input);
     style()->setFlexDirection(isVertical ? FlowColumn : FlowRow);
     TextDirection oldTextDirection = style()->direction();
     if (isVertical) {
@@ skipping 317 matching lines @@
     case MediaVolumeSliderThumbPart:
     case MediaFullScreenVolumeSliderPart:
     case MediaFullScreenVolumeSliderThumbPart:
         return mediaSliderContainer;
     default:
         return sliderContainer;
     }
 }
 
 }