feat(page): introduce page.setDefaultTimeout (#3854)

Method `page.setDefaultTimeout` overrides default 30 seconds timeout
for all `page.waitFor*` methods, including navigation and waiting
for selectors.

Fix #3319.

lib/Page.js

@@ -30,6 +30,7 @@ const {Coverage} = require('./Coverage');
 const {Worker} = require('./Worker');
 const {createJSHandle} = require('./JSHandle');
 const {Accessibility} = require('./Accessibility');
+const {TimeoutSettings} = require('./TimeoutSettings');
 const writeFileAsync = helper.promisify(fs.writeFile);
 
 class Page extends EventEmitter {
@@ -78,11 +79,12 @@ class Page extends EventEmitter {
     this._target = target;
     this._keyboard = new Keyboard(client);
     this._mouse = new Mouse(client, this._keyboard);
+    this._timeoutSettings = new TimeoutSettings();
     this._touchscreen = new Touchscreen(client, this._keyboard);
     this._accessibility = new Accessibility(client);
     this._networkManager = new NetworkManager(client);
     /** @type {!FrameManager} */
-    this._frameManager = new FrameManager(client, frameTree, this, this._networkManager);
+    this._frameManager = new FrameManager(client, frameTree, this, this._networkManager, this._timeoutSettings);
     this._networkManager.setFrameManager(this._frameManager);
     this._emulationManager = new EmulationManager(client);
     this._tracing = new Tracing(client);
@@ -268,7 +270,14 @@ class Page extends EventEmitter {
    * @param {number} timeout
    */
   setDefaultNavigationTimeout(timeout) {
-    this._frameManager.setDefaultNavigationTimeout(timeout);
+    this._timeoutSettings.setDefaultNavigationTimeout(timeout);
+  }
+
+  /**
+   * @param {number} timeout
+   */
+  setDefaultTimeout(timeout) {
+    this._timeoutSettings.setDefaultTimeout(timeout);
   }
 
   /**
@@ -664,7 +673,7 @@ class Page extends EventEmitter {
    */
   async waitForRequest(urlOrPredicate, options = {}) {
     const {
-      timeout = 30000
+      timeout = this._timeoutSettings.timeout(),
     } = options;
     return helper.waitForEvent(this._networkManager, Events.NetworkManager.Request, request => {
       if (helper.isString(urlOrPredicate))
@@ -682,7 +691,7 @@ class Page extends EventEmitter {
    */
   async waitForResponse(urlOrPredicate, options = {}) {
     const {
-      timeout = 30000
+      timeout = this._timeoutSettings.timeout(),
     } = options;
     return helper.waitForEvent(this._networkManager, Events.NetworkManager.Response, response => {
       if (helper.isString(urlOrPredicate))