Support for newer version of Facebook button, and fixed race condition.

src/socialwidgets.js

@@ -243,10 +243,14 @@ function replaceScriptsRecurse(node) {
  */
 function replaceTrackerButtonsHelper(trackers, trackerButtonsToReplace) {
 	trackers.forEach(function(tracker) {
-		var replaceTrackerButtons = trackerButtonsToReplace[tracker.name];
+		// There's a weird race condition where background might not yet know
+		// about a widget to replace, so just try them all.
+		// If the list of buttons to replace gets long, may want to optimize here.
+		var replaceTrackerButtons = true;//trackerButtonsToReplace[tracker.name];
 
 		if (replaceTrackerButtons) {	
-			console.log("replacing tracker button for " + tracker.name);	
+			//console.log("replacing tracker button for " + tracker.name);
+
 			// makes a comma separated list of CSS selectors that specify
 			// buttons for the current tracker; used for document.querySelectorAll
 			var buttonSelectorsString = tracker.buttonSelectors.toString();

src/socialwidgets.json

@@ -35,7 +35,8 @@
 		"domain": "www.facebook.com",
 		"buttonSelectors": [
 			"fb\\:like",
-			"iframe[src*='://www.facebook.com/plugins/like.php']"
+			"iframe[src*='://www.facebook.com/plugins/like.php']",
+			".fb-like"
 		],
 		"replacementButton": {
 			"details": "https://www.facebook.com/plugins/like.php?href=",

src/webrequest.js

@@ -350,7 +350,7 @@ chrome.runtime.onMessage.addListener(
       sendResponse(cookieBlock);
     }
     if(request.checkReplaceButton && Utils.isPrivacyBadgerEnabled(tabHost) && Utils.isSocialWidgetReplacementEnabled()){
-      var socialWidgetBlockList = getSocialWidgetBlockList(sender.tab.id); 
+      var socialWidgetBlockList = getSocialWidgetBlockList(sender.tab.id);
       sendResponse(socialWidgetBlockList);
     }
     if(request.unblockSocialWidget){