[FlexNG] Copy intrinsic block size from legacy to NG

Used when a child of NG is laid out by legacy. 3 Flex tests that have
img items now pass.

Bug: 845235
Change-Id: I7dece003eaba12453131233256a4e755ef1f93cf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1900031Reviewed-by: Christian Biesinger <cbiesinger@chromium.org>
Commit-Queue: David Grogan <dgrogan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#712838}

third_party/blink/renderer/core/layout/ng/ng_block_node.cc

@@ -1185,6 +1185,7 @@ scoped_refptr<const NGLayoutResult> NGBlockNode::RunLegacyLayout(
         constraint_space.IsNewFormattingContext());
     builder.SetInitialFragmentGeometry(fragment_geometry);
     builder.SetIsLegacyLayoutRoot();
+    builder.SetIntrinsicBlockSize(box_->IntrinsicContentLogicalHeight());
 
     // If we're block-fragmented, we can only handle monolithic content, since
     // the two block fragmentation machineries (NG and legacy) cannot cooperate.

third_party/blink/web_tests/TestExpectations

@@ -1426,11 +1426,8 @@ crbug.com/591099 virtual/layout_ng_flex_box/external/wpt/css/css-flexbox/anonymo
 crbug.com/807497 virtual/layout_ng_flex_box/external/wpt/css/css-flexbox/anonymous-flex-item-005.html [ Failure ]
 crbug.com/591099 virtual/layout_ng_flex_box/external/wpt/css/css-flexbox/flex-basis-010.html [ Failure ]
 crbug.com/591099 virtual/layout_ng_flex_box/external/wpt/css/css-flexbox/flex-direction-row-vertical.html [ Failure ]
-crbug.com/591099 virtual/layout_ng_flex_box/external/wpt/css/css-flexbox/flex-minimum-height-flex-items-004.xht [ Failure ]
 crbug.com/249112 virtual/layout_ng_flex_box/external/wpt/css/css-flexbox/flex-minimum-height-flex-items-005.xht [ Failure ]
-crbug.com/467127 virtual/layout_ng_flex_box/external/wpt/css/css-flexbox/flex-minimum-height-flex-items-006.xht [ Failure ]
 crbug.com/249112 virtual/layout_ng_flex_box/external/wpt/css/css-flexbox/flex-minimum-height-flex-items-007.xht [ Failure ]
-crbug.com/467127 virtual/layout_ng_flex_box/external/wpt/css/css-flexbox/flex-minimum-height-flex-items-008.xht [ Failure ]
 crbug.com/996474 virtual/layout_ng_flex_box/external/wpt/css/css-flexbox/flex-minimum-height-flex-items-009.html [ Pass Failure ]
 crbug.com/998080 virtual/layout_ng_flex_box/external/wpt/css/css-flexbox/flex-minimum-height-flex-items-012.html [ Failure ]
 crbug.com/591099 virtual/layout_ng_flex_box/external/wpt/css/css-flexbox/flex-minimum-height-flex-items-015.html [ Failure ]