Bug 1686229 - Part3. Display a module's loading status on about:support. r=Gijs,fluent-reviewers

This patch displays the new telemetry field "loadStatus", which was introduced
by the earlier patch, on about:support.  With this information, a user can see
each of injected modules was really loaded or blocked by our DLL blocklist.

Differential Revision: https://phabricator.services.mozilla.com/D102409

mozglue/dllservices/ModuleLoadInfo.h

@@ -14,6 +14,9 @@
 namespace mozilla {
 
 struct ModuleLoadInfo final {
+  // If you add a new value or change the meaning of the values, please
+  // update createLoadStatusElement in aboutSupport.js accordingly, which
+  // defines text labels of these enum values displayed on about:support.
   enum class Status : uint32_t {
     Loaded = 0,
     Blocked,

toolkit/content/aboutSupport.js

@@ -1189,6 +1189,16 @@ var snapshotFormatters = {
         : $.new(tag, "", "", {
             "data-l10n-id": "support-third-party-modules-no-value",
           });
+    const createLoadStatusElement = (tag, status) => {
+      const labelLoadStatus = [
+        "support-third-party-modules-status-loaded",
+        "support-third-party-modules-status-blocked",
+        "support-third-party-modules-status-redirected",
+      ];
+      return status >= 0 && status < labelLoadStatus.length
+        ? $.new(tag, "", "", { "data-l10n-id": labelLoadStatus[status] })
+        : $.new(tag, status);
+    };
 
     const iconUp = "chrome://global/skin/icons/arrow-up-12.svg";
     const iconDown = "chrome://global/skin/icons/arrow-dropdown-12.svg";
@@ -1233,6 +1243,7 @@ var snapshotFormatters = {
             // loadDurationMS can be empty (not zero) when a module is loaded
             // very early in the process.  processUptimeMS always has a value.
             createElementWithLabel("td", event.loadDurationMS),
+            createLoadStatusElement("td", event.loadStatus),
           ])
         );
       }
@@ -1260,6 +1271,9 @@ var snapshotFormatters = {
                   $.new("th", "", "", {
                     "data-l10n-id": "support-third-party-modules-duration",
                   }),
+                  $.new("th", "", "", {
+                    "data-l10n-id": "support-third-party-modules-status",
+                  }),
                 ]),
                 innerTBody,
               ]),

toolkit/locales/en-US/toolkit/about/aboutSupport.ftl

@@ -192,6 +192,10 @@ support-third-party-modules-thread = Thread
 support-third-party-modules-base = Imagebase Address
 support-third-party-modules-uptime = Process Uptime (ms)
 support-third-party-modules-duration = Loading Duration (ms)
+support-third-party-modules-status = Status
+support-third-party-modules-status-loaded = Loaded
+support-third-party-modules-status-blocked = Blocked
+support-third-party-modules-status-redirected = Redirected
 support-third-party-modules-empty = No third-party modules were loaded.
 support-third-party-modules-no-value = (No value)
 support-third-party-modules-button-open =