[css-grid] Implement transferred size part of Implied Minimum Size

third_party/WebKit/Source/core/layout/GridTrackSizingAlgorithm.cpp

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/layout/GridTrackSizingAlgorithm.h"
 
 #include "core/layout/Grid.h"
 #include "core/layout/LayoutGrid.h"
 #include "platform/LengthFunctions.h"
 
@@ skipping 358 matching lines @@
       flowAwareDirectionForChild(layoutGrid(), child, ForColumns);
   bool isRowAxis = direction() == childInlineDirection;
   const Length& childSize = isRowAxis ? child.styleRef().logicalWidth()
                                       : child.styleRef().logicalHeight();
   const Length& childMinSize = isRowAxis ? child.styleRef().logicalMinWidth()
                                          : child.styleRef().logicalMinHeight();
   bool overflowIsVisible =
       isRowAxis
           ? child.styleRef().overflowInlineDirection() == EOverflow::kVisible
           : child.styleRef().overflowBlockDirection() == EOverflow::kVisible;
-  if (!childSize.isAuto() || (childMinSize.isAuto() && overflowIsVisible))
+  if (!childSize.isAuto() || (childMinSize.isAuto() && overflowIsVisible)) {
+    if (child.isLayoutReplaced() && childSize.isAuto()) {
+      // If the box has an aspect ratio and no specified size, its automatic
+      // minimum size is the smaller of its content size and its transferred
+      // size.
+      return isRowAxis ? std::min(child.intrinsicLogicalWidth(),
+                                  minContentForChild(child))
+                       : std::min(child.intrinsicLogicalHeight(),
+                                  minContentForChild(child));
+    }
     return minContentForChild(child);
+  }
 
   bool overrideSizeHasChanged =
       updateOverrideContainingBlockContentSizeForChild(child,
                                                        childInlineDirection);
   if (isRowAxis)
     return minLogicalWidthForChild(child, childMinSize, childInlineDirection);
 
   layoutGridItemForMinSizeComputation(child, overrideSizeHasChanged);
 
   return child.computeLogicalHeightUsing(MinSize, childMinSize,
@@ skipping 1034 matching lines @@
   DCHECK(m_algorithm.isValidTransition());
   DCHECK(!m_algorithm.m_needsSetup);
 }
 
 GridTrackSizingAlgorithm::StateMachine::~StateMachine() {
   m_algorithm.advanceNextState();
   m_algorithm.m_needsSetup = true;
 }
 
 }  // namespace blink