DevTools: Make snippets renaming work through SnippetsProjectDelegate.

Source/devtools/front_end/ContentProviderBasedProjectDelegate.js

Index: Source/devtools/front_end/ContentProviderBasedProjectDelegate.js
diff --git a/Source/devtools/front_end/ContentProviderBasedProjectDelegate.js b/Source/devtools/front_end/ContentProviderBasedProjectDelegate.js
index 8f4897e49d0d8849efc97371106923f62af45f1a..87ac7a11b7bd3ec24c4f9dc588daefbf18771a22 100644
--- a/Source/devtools/front_end/ContentProviderBasedProjectDelegate.js
+++ b/Source/devtools/front_end/ContentProviderBasedProjectDelegate.js
@@ -97,6 +97,24 @@ WebInspector.ContentProviderBasedProjectDelegate.prototype = {
     },
 
     /**
+     * @return {boolean}
+     */
+    canRename: function()
+    {
+        return false;
+    },
+
+    /**
+     * @param {Array.<string>} path
+     * @param {string} newName
+     * @param {function(boolean, string=)} callback
+     */
+    rename: function(path, newName, callback)
+    {
+        callback(false);
+    },
+
+    /**
      * @param {Array.<string>} path
      * @param {string} query
      * @param {boolean} caseSensitive