Bug 557738 - Add user.js section to about:support. r=adw

toolkit/content/Troubleshoot.jsm

@@ -366,4 +366,12 @@ let dataProviders = {
     }
     done(data);
   },
+
+  userJS: function userJS(done) {
+    let userJSFile = Services.dirsvc.get("PrefD", Ci.nsIFile);
+    userJSFile.append("user.js");
+    done({
+      exists: userJSFile.exists() && userJSFile.fileSize > 0,
+    });
+  },
 };

toolkit/content/aboutSupport.js

@@ -178,6 +178,15 @@ let snapshotFormatters = {
     );
     $.append($("libversions-tbody"), trs);
   },
+
+  userJS: function userJS(data) {
+    if (!data.exists)
+      return;
+    let userJSFile = Services.dirsvc.get("PrefD", Ci.nsIFile);
+    userJSFile.append("user.js");
+    $("prefs-user-js-link").href = Services.io.newFileURI(userJSFile).spec;
+    $("prefs-user-js-section").style.display = "";
+  },
 };
 
 let $ = document.getElementById.bind(document);

toolkit/content/aboutSupport.xhtml

@@ -209,6 +209,11 @@
         </tbody>
       </table>
 
+      <section id="prefs-user-js-section" style="display:none">
+        <h3>&aboutSupport.userJSTitle;</h3>
+        <p>&aboutSupport.userJSDescription;</p>
+      </section>
+
       <!-- - - - - - - - - - - - - - - - - - - - - -->
       <h2 class="major-section">
         &aboutSupport.graphicsTitle;

toolkit/content/tests/browser/browser_Troubleshoot.js

@@ -322,6 +322,16 @@ const SNAPSHOT_SCHEMA = {
         },
       },
     },
+    userJS: {
+      required: true,
+      type: "object",
+      properties: {
+        exists: {
+          required: true,
+          type: "boolean",
+        },
+      },
+    },
   },
 };
 

toolkit/locales/en-US/chrome/global/aboutSupport.dtd

@@ -46,6 +46,10 @@ variant of aboutSupport.showDir.label. -->
 <!ENTITY aboutSupport.modifiedPrefsName "Name">
 <!ENTITY aboutSupport.modifiedPrefsValue "Value">
 
+<!-- LOCALIZATION NOTE (aboutSupport.userJSTitle, aboutSupport.userJSDescription): user.js is the name of the preference override file being checked. -->
+<!ENTITY aboutSupport.userJSTitle "user.js Preferences">
+<!ENTITY aboutSupport.userJSDescription "Your profile folder contains a <a id='prefs-user-js-link'>user.js file</a>, which includes preferences that were not created by &brandShortName;.">
+
 <!ENTITY aboutSupport.graphicsTitle "Graphics">
 
 <!ENTITY aboutSupport.jsTitle "JavaScript">