Merge m-c to inbound.

mobile/android/chrome/content/JSDOMParser.js

@@ -482,8 +482,8 @@
         }
       }
 
-      // Using Array.join() prevents lots of large intermediate strings from
-      // being created; instead, the result is created in one go.
+      // Using Array.join() avoids the overhead from lazy string concatenation.
+      // See http://blog.cdleary.com/2012/01/string-representation-in-spidermonkey/#ropes
       let arr = [];
       getHTML(this);
       return arr.join("");
@@ -526,8 +526,8 @@
         }
       }
 
-      // Using Array.join() prevents lots of large intermediate strings from
-      // being created; instead, the result is created in one go.
+      // Using Array.join() avoids the overhead from lazy string concatenation.
+      // See http://blog.cdleary.com/2012/01/string-representation-in-spidermonkey/#ropes
       let text = [];
       getText(this);
       return text.join("");

testing/talos/talos.json

@@ -1,6 +1,6 @@
 {
     "talos.zip": {
-        "url": "http://build.mozilla.org/talos/zips/talos.38e088867f7b.zip",
+        "url": "http://build.mozilla.org/talos/zips/talos.2605620aa7fc.zip",
         "path": ""
     }
 }