Bug 1411532 part 2 - Add a line to about:support that says whether stylo is enabled for chrome. r=bz

MozReview-Commit-ID: K1DU9KbtQJZ

--HG--
extra : rebase_source : f7e1fc7e2181e1eb0813e944ef7544b7fab545a6

toolkit/content/aboutSupport.js

@@ -81,21 +81,36 @@ var snapshotFormatters = {
       $("contentprocesses-row").hidden = true;
     }
 
-    let styloReason;
-    if (!data.styloBuild) {
-      styloReason = strings.GetStringFromName("disabledByBuild");
-    } else if (data.styloResult != data.styloDefault) {
-      if (data.styloResult) {
-        styloReason = strings.GetStringFromName("enabledByUser");
+    function getReasonStringName(resultValue, defaultValue) {
+      if (resultValue != defaultValue) {
+        if (resultValue) {
+          return "enabledByUser";
+        } else {
+          return "disabledByUser";
+        }
       } else {
-        styloReason = strings.GetStringFromName("disabledByUser");
+        if (resultValue) {
+          return "enabledByDefault";
+        } else {
+          return "disabledByDefault";
+        }
       }
-    } else if (data.styloDefault) {
-      styloReason = strings.GetStringFromName("enabledByDefault");
-    } else {
-      styloReason = strings.GetStringFromName("disabledByDefault");
     }
-    $("stylo-box").textContent = `${data.styloResult} (${styloReason})`;
+    let styloReason;
+    let styloChromeReason;
+    if (!data.styloBuild) {
+      styloReason = "disabledByBuild";
+      styloChromeReason = "disabledByBuild";
+    } else {
+      styloReason = getReasonStringName(data.styloResult, data.styloDefault);
+      styloChromeReason = getReasonStringName(data.styloChromeResult,
+                                              data.styloChromeDefault);
+    }
+    styloReason = strings.GetStringFromName(styloReason);
+    styloChromeReason = strings.GetStringFromName(styloChromeReason);
+    $("stylo-box").textContent =
+      `content = ${data.styloResult} (${styloReason}), ` +
+      `chrome = ${data.styloChromeResult} (${styloChromeReason})`;
 
     let keyGoogleFound = data.keyGoogleFound ? "found" : "missing";
     $("key-google-box").textContent = strings.GetStringFromName(keyGoogleFound);

toolkit/modules/Troubleshoot.jsm

@@ -69,7 +69,7 @@ const PREFS_WHITELIST = [
   "keyword.",
   "layers.",
   "layout.css.dpi",
-  "layout.css.servo.enabled",
+  "layout.css.servo.",
   "layout.display-list.",
   "media.",
   "mousewheel.",
@@ -249,6 +249,16 @@ var dataProviders = {
           Services.prefs.getBoolPref("layout.css.servo.enabled", false);
       }
     }
+    data.styloChromeDefault =
+      Services.prefs.getDefaultBranch(null)
+              .getBoolPref("layout.css.servo.chrome.enabled", false);
+    data.styloChromeResult = false;
+    if (data.styloResult) {
+      let winUtils = Services.wm.getMostRecentWindow("").
+                     QueryInterface(Ci.nsIInterfaceRequestor).
+                     getInterface(Ci.nsIDOMWindowUtils);
+      data.styloChromeResult = winUtils.isStyledByServo;
+    }
 
     const keyGoogle = Services.urlFormatter.formatURL("%GOOGLE_API_KEY%").trim();
     data.keyGoogleFound = keyGoogle != "no-google-api-key" && keyGoogle.length > 0;

toolkit/modules/tests/browser/browser_Troubleshoot.js

@@ -153,6 +153,12 @@ const SNAPSHOT_SCHEMA = {
         styloResult: {
           type: "boolean",
         },
+        styloChromeDefault: {
+          type: "boolean",
+        },
+        styloChromeResult: {
+          type: "boolean",
+        },
         keyGoogleFound: {
           type: "boolean",
         },