Added already_open column to chrome://suggestions-internals.

chrome/browser/resources/suggestions_internals/suggestions_internals.css

Index: chrome/browser/resources/suggestions_internals/suggestions_internals.css
diff --git a/chrome/browser/resources/suggestions_internals/suggestions_internals.css b/chrome/browser/resources/suggestions_internals/suggestions_internals.css
index 0e06d9ef08e97674e0a56a1b95ffbee879f66ce2..1996edcdf7a668a3fc8d425f39890c933cdf3e9f 100644
--- a/chrome/browser/resources/suggestions_internals/suggestions_internals.css
+++ b/chrome/browser/resources/suggestions_internals/suggestions_internals.css
@@ -23,6 +23,15 @@ p {
   margin-bottom: 1em;
 }
 
-.has-screenshot {
+.boolean-property-true {
   background-color: rgb(146, 205, 0);
 }
+
+.boolean-property-false {
+  background-color: rgb(205, 74, 0);
+}
+
+.boolean-property-true,
+.boolean-property-false {
+  text-align: center;
+}