Bug 1735589 Part 1 - Respect flex item's aspect-ratio when measuring its main size in block-axis. r=dholbert

We've already set the pre-stretched cross-size via StyleSizeOverrides. All we
have to do is remove the aspect-ratio override to allow the pre-stretched
cross-size in the inline-axis transfer through aspect-ratio to the main-axis as
the block-size.

Differential Revision: https://phabricator.services.mozilla.com/D131260

layout/generic/nsFlexContainerFrame.cpp

@@ -2078,11 +2078,6 @@ nscoord nsFlexContainerFrame::MeasureFlexItemContentBSize(
   StyleSizeOverrides sizeOverrides;
   if (aFlexItem.IsStretched()) {
     sizeOverrides.mStyleISize.emplace(aFlexItem.StyleCrossSize());
-    // Suppress any AspectRatio that we might have to prevent ComputeSize() from
-    // transferring our inline-size override through the aspect-ratio to set the
-    // block-size, because that would prevent us from measuring the content
-    // block-size.
-    sizeOverrides.mAspectRatio.emplace(AspectRatio());
     FLEX_LOGV("Cross size override: %d", aFlexItem.CrossSize());
   }
   sizeOverrides.mStyleBSize.emplace(StyleSize::Auto());

testing/web-platform/meta/css/css-flexbox/flex-aspect-ratio-img-column-011.html.ini

@@ -1,5 +0,0 @@
-[flex-aspect-ratio-img-column-011.html]
-  expected:
-    if (os == "android") and fission: [TIMEOUT, OK]
-  [.flexbox 7]
-    expected: FAIL

testing/web-platform/meta/css/css-flexbox/flex-minimum-height-flex-items-023.html.ini

@@ -1,2 +0,0 @@
-[flex-minimum-height-flex-items-023.html]
-  expected: FAIL

testing/web-platform/meta/css/css-sizing/aspect-ratio/flex-aspect-ratio-046.html.ini

@@ -1,2 +0,0 @@
-[flex-aspect-ratio-046.html]
-  expected: FAIL