[css-grid][masonry] Update tests to align with intrinsic track sizing behavior (#45669)

Updating masonry tests to ensure intrinsic tracks are the same size.
diff --git a/css/css-grid/masonry/tentative/align-content/masonry-align-content-003-ref.html b/css/css-grid/masonry/tentative/align-content/masonry-align-content-003-ref.html
index 9780d5f..9da15c0 100644
--- a/css/css-grid/masonry/tentative/align-content/masonry-align-content-003-ref.html
+++ b/css/css-grid/masonry/tentative/align-content/masonry-align-content-003-ref.html
@@ -8,31 +8,31 @@
   <title>Reference: Masonry layout with `align-content` in grid axis</title>
   <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
   <style>
-html,body {
-  color:black; background-color:white; font:15px/1 monospace; padding:0; margin:0;
-}
+    html,body {
+      color:black; background-color:white; font:15px/1 monospace; padding:0; margin:0;
+    }
 
-grid {
-  display: inline-grid;
-  gap: 1px 2px;
-  grid-template-columns: 1ch auto;
-  grid-template-rows: repeat(4,auto);
-  background: content-box silver;
-  border: 1px solid;
-  padding: 0 3px 2px 0;
-  width: 100px;
-  height: 120px;
-  align-content: center;
-  justify-items: start;
-}
+    grid {
+      display: inline-grid;
+      gap: 1px 2px;
+      grid-template-columns: 1ch auto;
+      grid-template-rows: repeat(4,19px);
+      background: content-box silver;
+      border: 1px solid;
+      padding: 0 3px 2px 0;
+      width: 100px;
+      height: 120px;
+      align-content: center;
+      justify-items: start;
+    }
 
-item {
-  background-color: #444;
-  color: #fff;
-}
+    item {
+      background-color: #444;
+      color: #fff;
+    }
 
-.tall { grid-row: span 2; padding: 3px 11px 1px 13px; }
-</style>
+    .tall { grid-row: span 2; padding: 3px 11px 1px 13px; }
+  </style>
 </head>
 <body>
 
@@ -90,7 +90,7 @@
   <item style="grid-row:3/4">6</item>
 </grid>
 
-<grid style="align-content:stretch">
+<grid style="align-content:stretch; grid-template-rows: repeat(4,29.25px);">
   <item class="tall" style="grid-row:1/2">1</item>
   <item style="grid-row:2/3">2</item>
   <item style="grid-row:3/4">3</item>
diff --git a/css/css-grid/masonry/tentative/masonry-grid-template-columns-computed-withcontent.html b/css/css-grid/masonry/tentative/masonry-grid-template-columns-computed-withcontent.html
index b36efb6..a799955 100644
--- a/css/css-grid/masonry/tentative/masonry-grid-template-columns-computed-withcontent.html
+++ b/css/css-grid/masonry/tentative/masonry-grid-template-columns-computed-withcontent.html
@@ -1,34 +1,34 @@
 <!DOCTYPE html>
 <html>
 <head>
-<meta charset="utf-8">
-<title>CSS Masonry Test: getComputedStyle().gridTemplateColumns</title>
-<link rel="help" href="https://drafts.csswg.org/css-grid-1/#propdef-grid-template-columns">
-<meta name="assert" content="grid-template-columns computed value is the keyword none or a computed track list.">
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script src="/css/support/computed-testcommon.js"></script>
-<style>
-  #target {
-    display: grid;
-    grid-template-rows: masonry;
-    font-size: 40px;
-    min-width: 200px;
-    width: 300px;
-    max-width: 400px;
-    min-height: 500px;
-    height: 600px;
-    max-height: 700px;
-  }
-  #child {
-    min-width: 20px;
-    width: 30px;
-    max-width: 40px;
-    min-height: 50px;
-    height: 60px;
-    max-height: 70px;
-  }
-</style>
+  <meta charset="utf-8">
+  <title>CSS Masonry Test: getComputedStyle().gridTemplateColumns</title>
+  <link rel="help" href="https://drafts.csswg.org/css-grid-1/#propdef-grid-template-columns">
+  <meta name="assert" content="grid-template-columns computed value is the keyword none or a computed track list.">
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+  <script src="/css/support/computed-testcommon.js"></script>
+  <style>
+    #target {
+      display: grid;
+      grid-template-rows: masonry;
+      font-size: 40px;
+      min-width: 200px;
+      width: 300px;
+      max-width: 400px;
+      min-height: 500px;
+      height: 600px;
+      max-height: 700px;
+    }
+    #child {
+      min-width: 20px;
+      width: 30px;
+      max-width: 40px;
+      min-height: 50px;
+      height: 60px;
+      max-height: 70px;
+    }
+  </style>
 </head>
 <body>
 <div id="container">
@@ -37,59 +37,59 @@
   </div>
 </div>
 <script>
-test_computed_value("grid-template-rows", 'masonry', 'masonry');
-test_computed_value("grid-template-columns", 'none', 'none'); // "none" without #child
+  test_computed_value("grid-template-rows", 'masonry', 'masonry');
+  test_computed_value("grid-template-columns", 'none', 'none'); // "none" without #child
 
-// track-size <fixed-breadth> = <length-percentage> | <flex> | min-content | max-content | auto
-test_computed_value("grid-template-columns", '20%', '60px'); // 20% * width
-test_computed_value("grid-template-columns", 'calc(-0.5em + 10px)', '0px');
-test_computed_value("grid-template-columns", 'calc(0.5em + 10px)', '30px');
-test_computed_value("grid-template-columns", 'calc(30% + 40px)', '130px'); // 30% * width + 40px
-test_computed_value("grid-template-columns", '5fr', '300px'); // width
-test_computed_value("grid-template-columns", 'min-content', '30px');
-test_computed_value("grid-template-columns", 'max-content', '30px');
-test_computed_value("grid-template-columns", 'auto', '300px'); // width
+  // track-size <fixed-breadth> = <length-percentage> | <flex> | min-content | max-content | auto
+  test_computed_value("grid-template-columns", '20%', '60px'); // 20% * width
+  test_computed_value("grid-template-columns", 'calc(-0.5em + 10px)', '0px');
+  test_computed_value("grid-template-columns", 'calc(0.5em + 10px)', '30px');
+  test_computed_value("grid-template-columns", 'calc(30% + 40px)', '130px'); // 30% * width + 40px
+  test_computed_value("grid-template-columns", '5fr', '300px'); // width
+  test_computed_value("grid-template-columns", 'min-content', '30px');
+  test_computed_value("grid-template-columns", 'max-content', '30px');
+  test_computed_value("grid-template-columns", 'auto', '300px'); // width
 
-// track-size minmax( <inflexible-breadth> , <track-breadth> )
-test_computed_value("grid-template-columns", 'minmax(10px, auto)', '300px'); // width
-test_computed_value("grid-template-columns", 'minmax(20%, max-content)', '60px'); // 20% * width
-test_computed_value("grid-template-columns", 'minmax(min-content, calc(-0.5em + 10px))', '30px');
-test_computed_value("grid-template-columns", 'minmax(auto, 0)', '30px');
+  // track-size minmax( <inflexible-breadth> , <track-breadth> )
+  test_computed_value("grid-template-columns", 'minmax(10px, auto)', '300px'); // width
+  test_computed_value("grid-template-columns", 'minmax(20%, max-content)', '60px'); // 20% * width
+  test_computed_value("grid-template-columns", 'minmax(min-content, calc(-0.5em + 10px))', '30px');
+  test_computed_value("grid-template-columns", 'minmax(auto, 0)', '30px');
 
-// track-size fit-content( <length-percentage> )
-test_computed_value("grid-template-columns", 'fit-content(70px)', '30px');
-test_computed_value("grid-template-columns", 'fit-content(20%)', '30px');
-test_computed_value("grid-template-columns", 'fit-content(calc(-0.5em + 10px))', '30px');
+  // track-size fit-content( <length-percentage> )
+  test_computed_value("grid-template-columns", 'fit-content(70px)', '30px');
+  test_computed_value("grid-template-columns", 'fit-content(20%)', '30px');
+  test_computed_value("grid-template-columns", 'fit-content(calc(-0.5em + 10px))', '30px');
 
-// <track-repeat> = repeat( [ <positive-integer> ] , [ <line-names>? <track-size> ]+ <line-names>? )
-test_computed_value("grid-template-columns", 'repeat(1, 10px)', '10px');
-test_computed_value("grid-template-columns", 'repeat(1, [one two] 20%)', '[one two] 60px');
-test_computed_value("grid-template-columns", 'repeat(2, minmax(10px, auto))', '160px 140px');
+  // <track-repeat> = repeat( [ <positive-integer> ] , [ <line-names>? <track-size> ]+ <line-names>? )
+  test_computed_value("grid-template-columns", 'repeat(1, 10px)', '10px');
+  test_computed_value("grid-template-columns", 'repeat(1, [one two] 20%)', '[one two] 60px');
+  test_computed_value("grid-template-columns", 'repeat(2, minmax(10px, auto))', '150px 150px');
 
-test_computed_value("grid-template-columns", 'repeat(2, fit-content(20%) [three four] 30px 40px [five six])',
-                    '30px [three four] 30px 40px [five six] 0px [three four] 30px 40px [five six]');
+  test_computed_value("grid-template-columns", 'repeat(2, fit-content(20%) [three four] 30px 40px [five six])',
+          '30px [three four] 30px 40px [five six] 30px [three four] 30px 40px [five six]');
 
-// <track-list> = [ <line-names>? [ <track-size> | <track-repeat> ] ]+ <line-names>?
-test_computed_value("grid-template-columns", 'min-content repeat(5, minmax(10px, auto))',
-                    '30px 54px 54px 54px 54px 54px');
-test_computed_value("grid-template-columns", '[] 150px [] 1fr []', '150px 150px');
+  // <track-list> = [ <line-names>? [ <track-size> | <track-repeat> ] ]+ <line-names>?
+  test_computed_value("grid-template-columns", 'min-content repeat(5, minmax(10px, auto))',
+          '30px 54px 54px 54px 54px 54px');
+  test_computed_value("grid-template-columns", '[] 150px [] 1fr []', '150px 150px');
 
-// <auto-repeat> = repeat( [ auto-fill | auto-fit ] , [ <line-names>? <fixed-size> ]+ <line-names>? )
-test_computed_value("grid-template-columns", 'repeat(auto-fill, 200px)', '200px');
-test_computed_value("grid-template-columns", 'repeat(auto-fit, [one] 20%)',
-                    '[one] 60px [one] 60px [one] 60px [one] 60px [one] 60px');
-test_computed_value("grid-template-columns", 'repeat(auto-fill, minmax(100px, 5fr) [two])',
-                    '100px [two] 100px [two] 100px [two]');
-test_computed_value("grid-template-columns", 'repeat(auto-fit, [three] minmax(max-content, 6em) [four])',
-                    '[three] 240px [four]');
+  // <auto-repeat> = repeat( [ auto-fill | auto-fit ] , [ <line-names>? <fixed-size> ]+ <line-names>? )
+  test_computed_value("grid-template-columns", 'repeat(auto-fill, 200px)', '200px');
+  test_computed_value("grid-template-columns", 'repeat(auto-fit, [one] 20%)',
+          '[one] 60px [one] 60px [one] 60px [one] 60px [one] 60px');
+  test_computed_value("grid-template-columns", 'repeat(auto-fill, minmax(100px, 5fr) [two])',
+          '100px [two] 100px [two] 100px [two]');
+  test_computed_value("grid-template-columns", 'repeat(auto-fit, [three] minmax(max-content, 6em) [four])',
+          '[three] 240px [four]');
 
-// <auto-track-list> =
-// [ <line-names>? [ <fixed-size> | <fixed-repeat> ] ]* <line-names>?
-// <auto-repeat>
-// [ <line-names>? [ <fixed-size> | <fixed-repeat> ] ]* <line-names>?
+  // <auto-track-list> =
+  // [ <line-names>? [ <fixed-size> | <fixed-repeat> ] ]* <line-names>?
+  // <auto-repeat>
+  // [ <line-names>? [ <fixed-size> | <fixed-repeat> ] ]* <line-names>?
 
-test_computed_value("grid-template-columns", '[one] repeat(2, minmax(50px, auto)) [two] 30px [three] repeat(auto-fill, 10px) 40px [four five] repeat(2, minmax(200px, auto)) [six]',
-                    '[one] 50px 50px [two] 30px [three] 10px 40px [four five] 200px 200px [six]');
+  test_computed_value("grid-template-columns", '[one] repeat(2, minmax(50px, auto)) [two] 30px [three] repeat(auto-fill, 10px) 40px [four five] repeat(2, minmax(200px, auto)) [six]',
+          '[one] 50px 50px [two] 30px [three] 10px 40px [four five] 200px 200px [six]');
 </script>
 </body>
 </html>