Issue #991 Part 1: Pale Moon

application/palemoon/base/content/browser-syncui.js

@@ -83,10 +83,7 @@ var gSyncUI = {
   _wasDelayed: false,
 
   _needsSetup: function SUI__needsSetup() {
-    let firstSync = "";
-    try {
-      firstSync = Services.prefs.getCharPref("services.sync.firstSync");
-    } catch (e) { }
+    let firstSync = Services.prefs.getCharPref("services.sync.firstSync", "");
     return Weave.Status.checkSetup() == Weave.CLIENT_NOT_CONFIGURED ||
            firstSync == "notReady";
   },
@@ -285,11 +282,7 @@ var gSyncUI = {
     if (!syncButton)
       return;
 
-    let lastSync;
-    try {
-      lastSync = Services.prefs.getCharPref("services.sync.lastSync");
-    }
-    catch (e) { };
+    let lastSync = Services.prefs.getCharPref("services.sync.lastSync");
     if (!lastSync || this._needsSetup()) {
       syncButton.removeAttribute("tooltiptext");
       return;

application/palemoon/base/content/tabbrowser.xml

@@ -3628,11 +3628,7 @@
           window.addEventListener("resize", this, false);
           window.addEventListener("load", this, false);
 
-          try {
-            this._tabAnimationLoggingEnabled = Services.prefs.getBoolPref("browser.tabs.animationLogging.enabled");
-          } catch (ex) {
-            this._tabAnimationLoggingEnabled = false;
-          }
+          this._tabAnimationLoggingEnabled = Services.prefs.getBoolPref("browser.tabs.animationLogging.enabled", false);
           this._browserNewtabpageEnabled = Services.prefs.getBoolPref("browser.newtabpage.enabled");
         ]]>
       </constructor>

application/palemoon/components/distribution.js

@@ -38,13 +38,7 @@ DistributionCustomizer.prototype = {
   },
 
   get _locale() {
-    let locale;
-    try {
-      locale = this._prefs.getCharPref("general.useragent.locale");
-    }
-    catch (e) {
-      locale = "en-US";
-    }
+    let locale = this._prefs.getCharPref("general.useragent.locale", "en-US");
     this.__defineGetter__("_locale", function() locale);
     return this._locale;
   },
@@ -221,11 +215,7 @@ DistributionCustomizer.prototype = {
         this._ini.getString("Global", "id") + ".bookmarksProcessed";
     }
 
-    let bmProcessed = false;
-    try {
-      bmProcessed = this._prefs.getBoolPref(bmProcessedPref);
-    }
-    catch (e) {}
+    let bmProcessed = this._prefs.getBoolPref(bmProcessedPref, false);
 
     if (!bmProcessed) {
       if (sections["BookmarksMenu"])

application/palemoon/components/feeds/FeedWriter.js

@@ -18,12 +18,7 @@ function LOG(str) {
   var prefB = Cc["@mozilla.org/preferences-service;1"].
               getService(Ci.nsIPrefBranch);
 
-  var shouldLog = false;
-  try {
-    shouldLog = prefB.getBoolPref("feeds.log");
-  } 
-  catch (ex) {
-  }
+  var shouldLog = prefB.getBoolPref("feeds.log", false);
 
   if (shouldLog)
     dump("*** Feeds: " + str + "\n");
@@ -874,11 +869,7 @@ FeedWriter.prototype = {
         Cc["@mozilla.org/preferences-service;1"].
         getService(Ci.nsIPrefBranch);
 
-    var handler = "bookmarks";
-    try {
-      handler = prefs.getCharPref(getPrefReaderForType(feedType));
-    }
-    catch (ex) { }
+    var handler = prefs.getCharPref(getPrefReaderForType(feedType), "bookmarks");
 
     switch (handler) {
       case "web": {
@@ -1076,11 +1067,7 @@ FeedWriter.prototype = {
         .addEventListener("command", this, false);
 
     // first-run ui
-    var showFirstRunUI = true;
-    try {
-      showFirstRunUI = prefs.getBoolPref(PREF_SHOW_FIRST_RUN_UI);
-    }
-    catch (ex) { }
+    var showFirstRunUI = prefs.getBoolPref(PREF_SHOW_FIRST_RUN_UI, true);
     if (showFirstRunUI) {
       var textfeedinfo1, textfeedinfo2;
       switch (feedType) {

application/palemoon/components/feeds/WebContentConverter.js

@@ -436,13 +436,8 @@ WebContentConverterRegistrar.prototype = {
 
     // check if it is in the black list
     var pb = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefBranch);
-    var allowed;
-    try {
-      allowed = pb.getBoolPref(PREF_HANDLER_EXTERNAL_PREFIX + "." + aProtocol);
-    }
-    catch (e) {
-      allowed = pb.getBoolPref(PREF_HANDLER_EXTERNAL_PREFIX + "-default");
-    }
+    var allowed = pb.getBoolPref(PREF_HANDLER_EXTERNAL_PREFIX + "." + aProtocol,
+      pb.getBoolPref(PREF_HANDLER_EXTERNAL_PREFIX + "-default"));
     if (!allowed) {
       // XXX this should be a "security exception" according to spec
       throw("Not allowed to register a protocol handler for " + aProtocol);

application/palemoon/components/nsBrowserContentHandler.js

@@ -100,20 +100,14 @@ const OVERRIDE_NEW_BUILD_ID = 3;
  *  OVERRIDE_NONE otherwise.
  */
 function needHomepageOverride(prefb) {
-  var savedmstone = null;
-  try {
-    savedmstone = prefb.getCharPref("browser.startup.homepage_override.mstone");
-  } catch (e) {}
+  var savedmstone = prefb.getCharPref("browser.startup.homepage_override.mstone", "");
 
   if (savedmstone == "ignore")
     return OVERRIDE_NONE;
 
   var mstone = Services.appinfo.platformVersion;
 
-  var savedBuildID = null;
-  try {
-    savedBuildID = prefb.getCharPref("browser.startup.homepage_override.buildID");
-  } catch (e) {}
+  var savedBuildID = prefb.getCharPref("browser.startup.homepage_override.buildID", "");
 
   var buildID = Services.appinfo.platformBuildID;
 
@@ -550,10 +544,7 @@ nsBrowserContentHandler.prototype = {
       // URL if we do end up showing an overridePage. This makes it possible
       // to have the overridePage's content vary depending on the version we're
       // upgrading from.
-      let old_mstone = "unknown";
-      try {
-        old_mstone = Services.prefs.getCharPref("browser.startup.homepage_override.mstone");
-      } catch (ex) {}
+      let old_mstone = Services.prefs.getCharPref("browser.startup.homepage_override.mstone", "unknown");
       let override = needHomepageOverride(prefb);
       if (override != OVERRIDE_NONE) {
         switch (override) {

application/palemoon/components/nsBrowserGlue.js

@@ -990,14 +990,8 @@ BrowserGlue.prototype = {
         // An import operation is about to run.
         // Don't try to recreate smart bookmarks if autoExportHTML is true or
         // smart bookmarks are disabled.
-        var autoExportHTML = false;
-        try {
-          autoExportHTML = Services.prefs.getBoolPref("browser.bookmarks.autoExportHTML");
-        } catch(ex) {}
-        var smartBookmarksVersion = 0;
-        try {
-          smartBookmarksVersion = Services.prefs.getIntPref("browser.places.smartBookmarksVersion");
-        } catch(ex) {}
+        var autoExportHTML = Services.prefs.getBoolPref("browser.bookmarks.autoExportHTML", false);
+        var smartBookmarksVersion = Services.prefs.getIntPref("browser.places.smartBookmarksVersion", 0);
         if (!autoExportHTML && smartBookmarksVersion != -1)
           Services.prefs.setIntPref("browser.places.smartBookmarksVersion", 0);
 
@@ -1556,10 +1550,7 @@ BrowserGlue.prototype = {
     const MAX_RESULTS = 10;
 
     // Get current smart bookmarks version.  If not set, create them.
-    let smartBookmarksCurrentVersion = 0;
-    try {
-      smartBookmarksCurrentVersion = Services.prefs.getIntPref(SMART_BOOKMARKS_PREF);
-    } catch(ex) {}
+    let smartBookmarksCurrentVersion = Services.prefs.getIntPref(SMART_BOOKMARKS_PREF, 0);
 
     // If version is current or smart bookmarks are disabled, just bail out.
     if (smartBookmarksCurrentVersion == -1 ||