Issue 6803 - Rename local observe function to observeShadow

lib/content/snippets.js

Index: lib/content/snippets.js
===================================================================
--- a/lib/content/snippets.js
+++ b/lib/content/snippets.js
@@ -198,17 +198,17 @@
   // be Firefox or an older version of Chrome.
   if (!originalAttachShadow)
     return;
 
   // Mutation observers mapped to their corresponding shadow roots and their
   // hosts.
   let shadows = new WeakMap();
 
-  function observe(mutations, observer)
+  function observeShadow(mutations, observer)
   {
     let {host, root} = shadows.get(observer) || {};
 
     // Since it's a weak map, it's possible that either the element or its
     // shadow has been removed.
     if (!host || !root)
       return;
 
@@ -234,17 +234,17 @@
   Object.defineProperty(Element.prototype, "attachShadow", {
     value(...args)
     {
       // Create the shadow root first. It doesn't matter if it's a closed
       // shadow root, we keep the reference in a weak map.
       let root = originalAttachShadow.apply(this, args);
 
       // Listen for relevant DOM mutations in the shadow.
-      let observer = new MutationObserver(observe);
+      let observer = new MutationObserver(observeShadow);
       observer.observe(root, {
         childList: true,
         characterData: true,
         subtree: true
       });
 
       // Keep references to the shadow root and its host in a weak map. If
       // either the shadow is detached or the host itself is removed from the