Remove RLS checks in layout tests.

Bug: 823365
Change-Id: I29537cc8d749eb426a9ae5624789b95b34121b13
Reviewed-on: https://chromium-review.googlesource.com/1042802Reviewed-by: Philip Rogers <pdr@chromium.org>
Commit-Queue: Steve Kobes <skobes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556038}

third_party/WebKit/LayoutTests/compositing/composite-scrollable-fixed-position-when-descendants-composite.html

@@ -15,10 +15,6 @@
     assert_not_equals(window.internals, null, 'This test requires window.internals');
     var layers_text = internals.layerTreeAsText(document);
     var layers = JSON.parse(layers_text);
-    if (internals.runtimeFlags.rootLayerScrollingEnabled) {
-      assert_equals(layers['layers'].length, 5);
-    } else {
-      assert_equals(layers['layers'].length, 3);
-    }
+    assert_equals(layers['layers'].length, 5);
   }, 'Having a composited child should be a position:fixed compositing trigger and should result in the fixed element getting a layer.');
 </script>

third_party/WebKit/LayoutTests/compositing/dont-composite-select-elements.html

@@ -13,10 +13,6 @@ if (window.internals)
 test(function() {
     var json = JSON.parse(window.internals.layerTreeAsText(document));
     // The <select> element's scroller should be painted into the root layer.
-    if (internals.runtimeFlags.rootLayerScrollingEnabled) {
-      assert_equals(json["layers"].length, 3);
-    } else {
-      assert_equals(json["layers"].length, 1);
-    }
-    }, "test");
+    assert_equals(json["layers"].length, 3);
+}, "test");
 </script>

third_party/WebKit/LayoutTests/compositing/dont-composite-text-input-elements.html

@@ -8,10 +8,6 @@ if (window.internals)
 test(function() {
     var json = JSON.parse(window.internals.layerTreeAsText(document));
     // The <input> element's scroller should be painted into the root layer.
-    if (internals.runtimeFlags.rootLayerScrollingEnabled) {
-      assert_equals(json["layers"].length, 3);
-    } else {
-      assert_equals(json["layers"].length, 1);
-    }
-    }, "test");
+    assert_equals(json["layers"].length, 3);
+}, "test");
 </script>

third_party/WebKit/LayoutTests/compositing/squashing/dont-squash-into-animated-layers.html

@@ -24,7 +24,7 @@ onload = function() {
     target.style.transform = "translateX(10px)";
     if (window.internals) {
         var layers = JSON.parse(internals.layerTreeAsText(document, 1))["layers"]
-        var nonAnimatedDIVLayer = internals.runtimeFlags.rootLayerScrollingEnabled ? layers[4] : layers[2];
+        var nonAnimatedDIVLayer = layers[4];
         assert_true(nonAnimatedDIVLayer.compositingReasons[1] == "Layer was separately composited because it could not be squashed.");
         assert_true(nonAnimatedDIVLayer.squashingDisallowedReasons[0] == "Cannot squash into a layer that is animating.");
     }

third_party/WebKit/LayoutTests/compositing/squashing/dont-squash-into-blend-mode.html

@@ -9,7 +9,7 @@ if (window.testRunner)
 onload = function() {
     if (window.internals) {
         var layers = JSON.parse(internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_DEBUG_INFO))["layers"];
-        var nonBlendDIVlayer = internals.runtimeFlags.rootLayerScrollingEnabled ? layers[5] : layers[3];
+        var nonBlendDIVlayer = layers[5];
         assert_true(nonBlendDIVlayer.compositingReasons[1] == "Layer was separately composited because it could not be squashed.");
         assert_true(nonBlendDIVlayer.squashingDisallowedReasons[0] == "Squashing a layer with blending is not supported.");
     }

third_party/WebKit/LayoutTests/compositing/squashing/dont-squash-with-scale-transform.html

@@ -18,8 +18,8 @@ onload = function() {
     if (window.internals) {
         var layers = JSON.parse(internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_DEBUG_INFO))["layers"];
 
-        var willChangeDIVLayer = internals.runtimeFlags.rootLayerScrollingEnabled ? layers[4] : layers[2];
-        var scaleTransformDIVLayer = internals.runtimeFlags.rootLayerScrollingEnabled ? layers[5] : layers[3];
+        var willChangeDIVLayer = layers[4];
+        var scaleTransformDIVLayer = layers[5];
         // Both transformed layers squash together after the will-change layer.
         assert_true(willChangeDIVLayer.compositingReasons[0] == "Has a will-change compositing hint");
         assert_true(scaleTransformDIVLayer.compositingReasons[0] == "Secondary layer, home for a group of squashable content");

third_party/WebKit/LayoutTests/paint/invalidation/media-audio-no-spurious-repaints.html

@@ -19,7 +19,7 @@ async_test(function(t) {
         var layerTree = internals.layerTreeAsText(
             document, internals.LAYER_TREE_INCLUDES_PAINT_INVALIDATIONS);
         var layers = JSON.parse(layerTree)['layers'];
-        var scrollingContentsLayer = internals.runtimeFlags.rootLayerScrollingEnabled ? layers[2] : layers[0];
+        var scrollingContentsLayer = layers[2];
         var paintInvalidations = scrollingContentsLayer.paintInvalidations;
         internals.stopTrackingRepaints(document);
 

third_party/WebKit/LayoutTests/paint/invalidation/subpixel-shadow-included-in-invalidation.html

@@ -41,7 +41,7 @@ runAfterLayoutAndPaint(function() {
                 return;
             var layers_dump = internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_PAINT_INVALIDATIONS);
             var layers = JSON.parse(layers_dump).layers;
-            var scrollingContentsLayer = internals.runtimeFlags.rootLayerScrollingEnabled ? layers[2] : layers[0];
+            var scrollingContentsLayer = layers[2];
             var paintInvalidations = scrollingContentsLayer.paintInvalidations;
             var shadowRect = [1.4, 1.4, 100, 100];
             assert_true(paintInvalidations.some(paintInvalidation => rectContainsRect(paintInvalidation.rect, shadowRect)),