Update default outline-offset for links to 1px.

This CL updates the default outline-offset for links to 1px
in order to improve text visibility.

Bug: 1055241
Change-Id: I8bfa522b9fbe1910e649b653a74261f87ae986ac
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2076664
Commit-Queue: Ionel Popescu <iopopesc@microsoft.com>
Reviewed-by: Mason Freed <masonfreed@chromium.org>
Reviewed-by: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#745341}

third_party/blink/renderer/core/style/computed_style.cc

@@ -2216,10 +2216,13 @@ int ComputedStyle::GetDefaultOffsetForFocusRing() const {
   if (!::features::IsFormControlsRefreshEnabled())
     return 0;
 
-  // For FormControlsRefresh checkbox and radio have a 2px inner padding.
   if (EffectiveAppearance() == kCheckboxPart ||
-      EffectiveAppearance() == kRadioPart)
+      EffectiveAppearance() == kRadioPart) {
     return 2;
+  } else if (IsLink()) {
+    return 1;
+  }
+
   return 0;
 }
 

third_party/blink/web_tests/flag-specific/composite-after-paint/paint/invalidation/svg/scrolling-embedded-svg-file-image-repaint-problem-expected.txt

@@ -18,7 +18,7 @@
         },
         {
           "object": "NGPhysicalBoxFragment LayoutInline A",
-          "rect": [382, 970, 44, 23],
+          "rect": [381, 969, 46, 25],
           "reason": "appeared"
         },
         {

third_party/blink/web_tests/platform/linux/paint/invalidation/svg/scrolling-embedded-svg-file-image-repaint-problem-expected.txt

@@ -18,7 +18,7 @@
         },
         {
           "object": "NGPhysicalBoxFragment LayoutInline A",
-          "rect": [382, 970, 44, 23],
+          "rect": [381, 969, 46, 25],
           "reason": "appeared"
         },
         {

third_party/blink/web_tests/platform/mac/paint/invalidation/svg/scrolling-embedded-svg-file-image-repaint-problem-expected.txt

@@ -18,7 +18,7 @@
         },
         {
           "object": "NGPhysicalBoxFragment LayoutInline A",
-          "rect": [381, 990, 49, 23],
+          "rect": [380, 989, 51, 25],
           "reason": "appeared"
         },
         {

third_party/blink/web_tests/platform/win/paint/invalidation/svg/scrolling-embedded-svg-file-image-repaint-problem-expected.txt

@@ -18,7 +18,7 @@
         },
         {
           "object": "NGPhysicalBoxFragment LayoutInline A",
-          "rect": [383, 1010, 48, 23],
+          "rect": [382, 1009, 50, 25],
           "reason": "appeared"
         },
         {