[LayoutNG] Treat fit-content and fill-available as auto for min/max contribution.

I.e. just propagate their min/max values.

Cq-Include-Trybots: luci.chromium.try:linux_layout_tests_layout_ng
Change-Id: Id7bdc6bfdb99e01efc032fc2bf311ec70fea95a7
Reviewed-on: https://chromium-review.googlesource.com/1127896Reviewed-by: Ian Kilpatrick <ikilpatrick@chromium.org>
Reviewed-by: Christian Biesinger <cbiesinger@chromium.org>
Commit-Queue: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#573681}

third_party/WebKit/LayoutTests/FlagExpectations/enable-blink-features=LayoutNG

@@ -510,8 +510,6 @@ crbug.com/591099 fast/css-grid-layout/grid-self-baseline-vertical-rl-06.html [ F
 crbug.com/591099 fast/css-grid-layout/grid-self-baseline-vertical-rl-07.html [ Failure ]
 crbug.com/591099 fast/css-grid-layout/maximize-tracks-definite-indefinite-width.html [ Failure ]
 crbug.com/591099 fast/css-grid-layout/percent-padding-margin-resolution-grid-item.html [ Failure ]
-crbug.com/591099 fast/css-intrinsic-dimensions/fillavailable-minmax-content-inlinesize-contribution-nonreplaced-blocks.html [ Failure ]
-crbug.com/591099 fast/css-intrinsic-dimensions/fitcontent-minmax-content-inlinesize-contribution-nonreplaced-blocks.html [ Failure ]
 crbug.com/591099 fast/css-intrinsic-dimensions/fixed-height-stf-img-block-child-percent-height.html [ Failure ]
 crbug.com/591099 fast/css-intrinsic-dimensions/fixed-height-stf-img-inline-child-percent-height.html [ Failure ]
 crbug.com/591099 fast/css-intrinsic-dimensions/height-positioned.html [ Failure ]

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

@@ -282,7 +282,9 @@ MinMaxSize ComputeMinAndMaxContentContribution(
   Length inline_size = writing_mode == WritingMode::kHorizontalTb
                            ? style.Width()
                            : style.Height();
-  if (inline_size.IsAuto() || inline_size.IsPercentOrCalc()) {
+  if (inline_size.IsAuto() || inline_size.IsPercentOrCalc() ||
+      inline_size.GetType() == kFillAvailable ||
+      inline_size.GetType() == kFitContent) {
     CHECK(min_and_max.has_value());
     computed_sizes = *min_and_max;
   } else {

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

@@ -143,7 +143,6 @@ TEST_F(NGLengthUtilsTest, testComputeContentContribution) {
   EXPECT_EQ(expected, ComputeMinAndMaxContentContribution(
                           style_->GetWritingMode(), *style_, sizes));
 
-  expected = MinMaxSize{LayoutUnit(), LayoutUnit()};
   style_->SetLogicalWidth(Length(kFillAvailable));
   EXPECT_EQ(expected, ComputeMinAndMaxContentContribution(
                           style_->GetWritingMode(), *style_, sizes));