1 files changed, 31 insertions, 1 deletions
diff --git a/application/palemoon/components/nsBrowserGlue.js b/application/palemoon/components/nsBrowserGlue.js
index aa24d88ef..720d1165c 100644
--- a/application/palemoon/components/nsBrowserGlue.js
+++ b/application/palemoon/components/nsBrowserGlue.js
@@ -1207,7 +1207,7 @@ BrowserGlue.prototype = {
   },
 
   _migrateUI: function BG__migrateUI() {
-    const UI_VERSION = 17;
+    const UI_VERSION = 19;
     const BROWSER_DOCURL = "chrome://browser/content/browser.xul#";
     let currentUIVersion = 0;
     try {
@@ -1412,6 +1412,36 @@ BrowserGlue.prototype = {
     delete this._rdf;
     delete this._dataSource;
 
+    if (currentUIVersion < 18) {
+      // Make sure the doNotTrack value conforms to the conversion from
+      // three-state to two-state. (This reverts a setting of "please track me"
+      // to the default "don't say anything").
+      try {
+        if (Services.prefs.getBoolPref("privacy.donottrackheader.enabled") &&
+            Services.prefs.getIntPref("privacy.donottrackheader.value") != 1) {
+          Services.prefs.clearUserPref("privacy.donottrackheader.enabled");
+          Services.prefs.clearUserPref("privacy.donottrackheader.value");
+        }
+      }
+      catch (ex) {}
+    }
+
+#ifndef MOZ_JXR
+    // Until JPEG-XR decoder is implemented (UXP #144)
+    if (currentUIVersion < 19) {
+      try {
+        let ihaPref = "image.http.accept";
+        let ihaValue = Services.prefs.getCharPref(ihaPref);
+        if (ihaValue.includes("image/jxr,")) {
+          Services.prefs.setCharPref(ihaPref, ihaValue.replace("image/jxr,", ""));
+        } else if (ihaValue.includes("image/jxr")) {
+          Services.prefs.clearUserPref(ihaPref);
+        }
+      }
+      catch (ex) {}
+    }
+#endif
+
     // Update the migration version.
     Services.prefs.setIntPref("browser.migration.version", UI_VERSION);
   },