Backed out 3 changesets (bug 1683753) for WebRender bustages. CLOSED TREE

Backed out changeset 9ecf9ce11807 (bug 1683753)
Backed out changeset df2921234c95 (bug 1683753)
Backed out changeset be651eeda6d3 (bug 1683753)

Author: Razvan Maries

gfx/wr/webrender/src/texture_cache.rs

@@ -235,7 +235,7 @@ struct SharedTextures {
     alpha8_linear: AllocatorList<ShelfAllocator, TextureParameters>,
     alpha16_linear: AllocatorList<SlabAllocator, TextureParameters>,
     color8_linear: AllocatorList<ShelfAllocator, TextureParameters>,
-    color8_glyphs: AllocatorList<ShelfAllocator, TextureParameters>,
+    color8_glyphs: AllocatorList<BucketedShelfAllocator, TextureParameters>,
 }
 
 impl SharedTextures {

gfx/wr/wrench/reftests/border/reftest.list

@@ -9,7 +9,7 @@ fuzzy(128,69) == border-overlapping-corner.yaml border-overlapping-corner-ref.ya
 == border-overlapping-edge.yaml border-overlapping-edge-ref.yaml
 == border-invisible.yaml border-invisible-ref.yaml
 platform(linux,mac) fuzzy(3,80) == border-suite.yaml border-suite.png
-platform(linux,mac) fuzzy(8,105) == border-suite-2.yaml border-suite-2.png
+platform(linux,mac) fuzzy(8,90) == border-suite-2.yaml border-suite-2.png
 platform(linux,mac) fuzzy(1,10) == border-suite-3.yaml border-suite-3.png
 skip_on(android,device) == border-double-simple.yaml border-double-simple-ref.yaml  # Fails on Pixel2
 == border-double-simple-2.yaml border-double-simple-2-ref.yaml

gfx/wr/wrench/reftests/text/reftest.list

@@ -62,7 +62,7 @@ fuzzy(1,1) platform(linux) == two-shadows.yaml two-shadows.png
 == shadow-fast-clip.yaml shadow-fast-clip-ref.yaml
 skip_on(android,device) == shadow-partial-glyph.yaml shadow-partial-glyph-ref.yaml  # Fails on Pixel2
 fuzzy(2,210) platform(linux) == shadow-transforms.yaml shadow-transforms.png
-fuzzy(2,320) platform(linux) == raster-space.yaml raster-space.png
+fuzzy(1,200) platform(linux) == raster-space.yaml raster-space.png
 skip_on(android) skip_on(mac,>=10.14) != allow-subpixel.yaml allow-subpixel-ref.yaml  # Android: we don't enable sub-px aa on this platform.
 skip_on(android,device) == bg-color.yaml bg-color-ref.yaml  # Fails on Pixel2
 != large-glyphs.yaml blank.yaml

gfx/wr/wrench/src/reftest.rs

@@ -509,15 +509,6 @@ impl ReftestManifest {
             let reference = paths.pop().unwrap();
             let test = paths;
 
-            if environment.platform == "android" {
-                // Add some fuzz on mobile.
-                // See https://searchfox.org/mozilla-central/rev/a0ccd492719b1ad2106f6456549be62a76f45acb/layout/tools/reftest/reftest.jsm#1192
-                // First remove the ranges with difference <= 2, otherwise they might cause the
-                // test to fail before the new range is picked up.
-                fuzziness.retain(|fuzzy| fuzzy.max_difference > 2);
-                fuzziness.push(RefTestFuzzy { max_difference: 2, num_differences: std::usize::MAX });
-            }
-
             // to avoid changing the meaning of existing tests, the case of
             // only a single (or no) 'fuzzy' keyword means we use the max
             // of that fuzzy and options.allow_.. (we don't want that to