Add filtering by priority in the Network filter area.

third_party/WebKit/Source/devtools/front_end/platform/utilities.js

Index: third_party/WebKit/Source/devtools/front_end/platform/utilities.js
diff --git a/third_party/WebKit/Source/devtools/front_end/platform/utilities.js b/third_party/WebKit/Source/devtools/front_end/platform/utilities.js
index 23ed78cb293c69b136a8ad445767e769a3dbe648..327c6e44274adfcd19ff619c44dd952547c93ae5 100644
--- a/third_party/WebKit/Source/devtools/front_end/platform/utilities.js
+++ b/third_party/WebKit/Source/devtools/front_end/platform/utilities.js
@@ -484,6 +484,7 @@ Object.defineProperty(Array.prototype, 'rotate', {
 Object.defineProperty(Array.prototype, 'sortNumbers', {
   /**
    * @this {Array.<number>}
+   * @return {!Array.<number>}

[allada, 2016/12/20 01:35:00]

I didn't realize sort() sorted in place. Lets follow the way sort() works and
revert this.

    */
   value: function() {
     /**
@@ -495,7 +496,7 @@ Object.defineProperty(Array.prototype, 'sortNumbers', {
       return a - b;
     }
 
-    this.sort(numericComparator);
+    return this.sort(numericComparator);

[allada, 2016/12/20 01:35:00]

and this.

   }
 });
 
@@ -1153,10 +1154,11 @@ Map.prototype.keysArray = function() {
 };
 
 /**
- * @return {!Multimap<!KEY, !VALUE>}
+ * @param {!Object=} config
+ * @return {!Multimap<!KEY, !VALUE>|!Map<!KEY, !VALUE>}
  */
-Map.prototype.inverse = function() {
-  var result = new Multimap();
+Map.prototype.inverse = function(config) {
+  var result = (config && config.regularMap) ? new Map() : new Multimap();

[allada, 2016/12/20 01:35:00]

I spoke to one of the members of our team and he did not feel we should alter
this function. Lets revert this and adhoc it. (see other comment)

   for (var key of this.keys()) {
     var value = this.get(key);
     result.set(value, key);