[Devtools] Added Enable/Disable for request blocking in network

third_party/WebKit/Source/devtools/front_end/sdk/NetworkManager.js

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 666 matching lines @@
   }
 };
 
 /**
  * @implements {SDK.TargetManager.Observer}
  * @unrestricted
  */
 SDK.MultitargetNetworkManager = class extends Common.Object {
   constructor() {
     super();
-
-    /** @type {!Set<string>} */
-    this._blockedURLs = new Set();
-    this._blockedSetting = Common.moduleSetting('networkBlockedURLs');
-    this._blockedSetting.addChangeListener(this._updateBlockedURLs, this);
-    this._updateBlockedURLs();
-
     this._userAgentOverride = '';
     /** @type {!Set<!Protocol.NetworkAgent>} */
     this._agents = new Set();
     /** @type {!SDK.NetworkManager.Conditions} */
     this._networkConditions = SDK.NetworkManager.NoThrottlingConditions;
 
+    this._agentsHaveBlockedURLs = false;
+    this._blockedEnabledSetting = Common.moduleSetting('requestBlockingEnabled');
+    this._blockedEnabledSetting.addChangeListener(this._updateBlockedURLs, this);
+    this._blockedURLsSetting = Common.moduleSetting('networkBlockedURLs');
+    this._blockedURLsSetting.addChangeListener(this._updateBlockedURLs, this);
+    this._updateBlockedURLs();
+
     SDK.targetManager.observeTargets(this, SDK.Target.Capability.Network);
   }
 
   /**
    * @param {string} uaString
    * @return {string}
    */
   static patchUserAgentWithChromeVersion(uaString) {
     // Patches Chrome/CriOS version from user agent ("1.2.3.4" when user agent is: "Chrome/1.2.3.4").
     var chromeRegex = new RegExp('(?:^|\\W)Chrome/(\\S+)');
     var chromeMatch = navigator.userAgent.match(chromeRegex);
     if (chromeMatch && chromeMatch.length > 1)
       return String.sprintf(uaString, chromeMatch[1]);
     return uaString;
   }
 
   /**
    * @override
    * @param {!SDK.Target} target
    */
   targetAdded(target) {
     var networkAgent = target.networkAgent();
     if (this._extraHeaders)
       networkAgent.setExtraHTTPHeaders(this._extraHeaders);
     if (this._currentUserAgent())
       networkAgent.setUserAgentOverride(this._currentUserAgent());
-    for (var url of this._blockedURLs)
-      networkAgent.addBlockedURL(url);
+    if (this._blockedEnabledSetting.get())
+      networkAgent.setBlockedURLs(this._blockedURLsSetting.get());
     this._agents.add(networkAgent);
     if (this.isThrottling())
       this._updateNetworkConditions(networkAgent);
   }
 
   /**
    * @override
    * @param {!SDK.Target} target
    */
   targetRemoved(target) {
@@ skipping 90 matching lines @@
 
   /**
    * @param {string} userAgent
    */
   setCustomUserAgentOverride(userAgent) {
     this._customUserAgent = userAgent;
     this._updateUserAgentOverride();
   }
 
   _updateBlockedURLs() {
-    var blocked = this._blockedSetting.get();
-    for (var url of blocked) {
-      if (!this._blockedURLs.has(url))
-        this._addBlockedURL(url);
-    }
-    for (var url of this._blockedURLs) {
-      if (blocked.indexOf(url) === -1)
-        this._removeBlockedURL(url);
-    }
-  }
-
-  /**
-   * @param {string} url
-   */
-  _addBlockedURL(url) {
-    this._blockedURLs.add(url);
+    var urls = /** @type {!Array<string>} */ ([]);
+    if (this._blockedEnabledSetting.get())
+      urls = this._blockedURLsSetting.get();
+    if (!urls.length && !this._agentsHaveBlockedURLs)
+      return;
+    this._agentsHaveBlockedURLs = !!urls.length;
     for (var agent of this._agents)
-      agent.addBlockedURL(url);
-  }
-
-  /**
-   * @param {string} url
-   */
-  _removeBlockedURL(url) {
-    this._blockedURLs.delete(url);
-    for (var agent of this._agents)
-      agent.removeBlockedURL(url);
+      agent.setBlockedURLs(urls);
   }
 
   clearBrowserCache() {
     for (var agent of this._agents)
       agent.clearBrowserCache();
   }
 
   clearBrowserCookies() {
     for (var agent of this._agents)
       agent.clearBrowserCookies();
@@ skipping 33 matching lines @@
     Host.ResourceLoader.load(url, headers, callback);
   }
 };
 
 /** @enum {symbol} */
 SDK.MultitargetNetworkManager.Events = {
   ConditionsChanged: Symbol('ConditionsChanged'),
   UserAgentChanged: Symbol('UserAgentChanged')
 };
 
-
 /**
  * @type {!SDK.MultitargetNetworkManager}
  */
 SDK.multitargetNetworkManager;