diff --git a/experimental/puppeteer-firefox/lib/FrameManager.js b/experimental/puppeteer-firefox/lib/FrameManager.js
index f54118092e70f..39a2297aeeeb1 100644
--- a/experimental/puppeteer-firefox/lib/FrameManager.js
+++ b/experimental/puppeteer-firefox/lib/FrameManager.js
@@ -171,7 +171,7 @@ class Frame {
     } = options;
     const normalizedWaitUntil = normalizeWaitUntil(waitUntil);
 
-    const timeoutError = new TimeoutError('Navigation Timeout Exceeded: ' + timeout + 'ms');
+    const timeoutError = new TimeoutError('Navigation timeout of ' + timeout + ' ms exceeded');
     let timeoutCallback;
     const timeoutPromise = new Promise(resolve => timeoutCallback = resolve.bind(null, timeoutError));
     const timeoutId = timeout ? setTimeout(timeoutCallback, timeout) : null;
@@ -228,7 +228,7 @@ class Frame {
     if (!navigationId)
       return;
 
-    const timeoutError = new TimeoutError('Navigation Timeout Exceeded: ' + timeout + 'ms');
+    const timeoutError = new TimeoutError('Navigation timeout of ' + timeout + ' ms exceeded');
     let timeoutCallback;
     const timeoutPromise = new Promise(resolve => timeoutCallback = resolve.bind(null, timeoutError));
     const timeoutId = timeout ? setTimeout(timeoutCallback, timeout) : null;
diff --git a/experimental/puppeteer-firefox/lib/Page.js b/experimental/puppeteer-firefox/lib/Page.js
index de5c7b41e95f1..ad7019b0ff5fd 100644
--- a/experimental/puppeteer-firefox/lib/Page.js
+++ b/experimental/puppeteer-firefox/lib/Page.js
@@ -446,7 +446,7 @@ class Page extends EventEmitter {
     if (!navigationId)
       return null;
 
-    const timeoutError = new TimeoutError('Navigation Timeout Exceeded: ' + timeout + 'ms');
+    const timeoutError = new TimeoutError('Navigation timeout of ' + timeout + ' ms exceeded');
     let timeoutCallback;
     const timeoutPromise = new Promise(resolve => timeoutCallback = resolve.bind(null, timeoutError));
     const timeoutId = timeout ? setTimeout(timeoutCallback, timeout) : null;
@@ -479,7 +479,7 @@ class Page extends EventEmitter {
     if (!navigationId)
       return null;
 
-    const timeoutError = new TimeoutError('Navigation Timeout Exceeded: ' + timeout + 'ms');
+    const timeoutError = new TimeoutError('Navigation timeout of ' + timeout + ' ms exceeded');
     let timeoutCallback;
     const timeoutPromise = new Promise(resolve => timeoutCallback = resolve.bind(null, timeoutError));
     const timeoutId = timeout ? setTimeout(timeoutCallback, timeout) : null;
@@ -512,7 +512,7 @@ class Page extends EventEmitter {
     if (!navigationId)
       return null;
 
-    const timeoutError = new TimeoutError('Navigation Timeout Exceeded: ' + timeout + 'ms');
+    const timeoutError = new TimeoutError('Navigation timeout of ' + timeout + ' ms exceeded');
     let timeoutCallback;
     const timeoutPromise = new Promise(resolve => timeoutCallback = resolve.bind(null, timeoutError));
     const timeoutId = timeout ? setTimeout(timeoutCallback, timeout) : null;
diff --git a/lib/Accessibility.js b/lib/Accessibility.js
index 419e59fd2ed22..9f005a06b2e35 100644
--- a/lib/Accessibility.js
+++ b/lib/Accessibility.js
@@ -143,6 +143,7 @@ class AXNode {
     this._editable = false;
     this._focusable = false;
     this._expanded = false;
+    this._hidden = false;
     this._name = this._payload.name ? this._payload.name.value : '';
     this._role = this._payload.role ? this._payload.role.value : 'Unknown';
     this._cachedHasFocusableChild;
@@ -156,6 +157,8 @@ class AXNode {
         this._focusable = property.value.value;
       if (property.name === 'expanded')
         this._expanded = property.value.value;
+      if (property.name === 'hidden')
+        this._hidden = property.value.value;
     }
   }
 
@@ -289,7 +292,7 @@ class AXNode {
    */
   isInteresting(insideControl) {
     const role = this._role;
-    if (role === 'Ignored')
+    if (role === 'Ignored' || this._hidden)
       return false;
 
     if (this._focusable || this._richlyEditable)
diff --git a/lib/ExecutionContext.js b/lib/ExecutionContext.js
index cda3899d1eec8..d66c0d7645824 100644
--- a/lib/ExecutionContext.js
+++ b/lib/ExecutionContext.js
@@ -163,7 +163,7 @@ class ExecutionContext {
       if (error.message.includes('Object couldn\'t be returned by value'))
         return {result: {type: 'undefined'}};
 
-      if (error.message.endsWith('Cannot find context with specified id'))
+      if (error.message.endsWith('Cannot find context with specified id') || error.message.endsWith('Inspected target navigated or closed'))
         throw new Error('Execution context was destroyed, most likely because of a navigation.');
       throw error;
     }
diff --git a/lib/LifecycleWatcher.js b/lib/LifecycleWatcher.js
index 3f1f86dbd6663..747675bcbf3c7 100644
--- a/lib/LifecycleWatcher.js
+++ b/lib/LifecycleWatcher.js
@@ -137,7 +137,7 @@ class LifecycleWatcher {
   _createTimeoutPromise() {
     if (!this._timeout)
       return new Promise(() => {});
-    const errorMessage = 'Navigation Timeout Exceeded: ' + this._timeout + 'ms exceeded';
+    const errorMessage = 'Navigation timeout of ' + this._timeout + ' ms exceeded';
     return new Promise(fulfill => this._maximumTimer = setTimeout(fulfill, this._timeout))
         .then(() => new TimeoutError(errorMessage));
   }
diff --git a/package.json b/package.json
index 66d31c2d89e44..59dc40df082f3 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "node": ">=8.16.0"
   },
   "puppeteer": {
-    "chromium_revision": "686378"
+    "chromium_revision": "706915"
   },
   "scripts": {
     "unit": "node test/test.js",
diff --git a/test/golden-chromium/screenshot-offscreen-clip.png b/test/golden-chromium/screenshot-offscreen-clip.png
deleted file mode 100644
index fac15c30e0b3c..0000000000000
Binary files a/test/golden-chromium/screenshot-offscreen-clip.png and /dev/null differ
diff --git a/test/golden-firefox/screenshot-offscreen-clip.png b/test/golden-firefox/screenshot-offscreen-clip.png
deleted file mode 100644
index 791496e5da72d..0000000000000
Binary files a/test/golden-firefox/screenshot-offscreen-clip.png and /dev/null differ
diff --git a/test/launcher.spec.js b/test/launcher.spec.js
index 8cb43a9737a42..990c35da35da7 100644
--- a/test/launcher.spec.js
+++ b/test/launcher.spec.js
@@ -221,13 +221,13 @@ module.exports.addTests = function({testRunner, expect, defaultBrowserOptions, p
         expect(spawnargs.indexOf(defaultArgs[2])).toBe(-1);
         await browser.close();
       });
-      it_fails_ffox('should have default url when launching browser', async function() {
+      it_fails_ffox('should have default URL when launching browser', async function() {
         const browser = await puppeteer.launch(defaultBrowserOptions);
         const pages = (await browser.pages()).map(page => page.url());
         expect(pages).toEqual(['about:blank']);
         await browser.close();
       });
-      it_fails_ffox('should have custom url when launching browser', async function({server}) {
+      it_fails_ffox('should have custom URL when launching browser', async function({server}) {
         const options = Object.assign({}, defaultBrowserOptions);
         options.args = [server.EMPTY_PAGE].concat(options.args || []);
         const browser = await puppeteer.launch(options);
diff --git a/test/navigation.spec.js b/test/navigation.spec.js
index fd212e59ec14c..5cf8d7b83c077 100644
--- a/test/navigation.spec.js
+++ b/test/navigation.spec.js
@@ -137,7 +137,7 @@ module.exports.addTests = function({testRunner, expect, puppeteer, CHROME}) {
       server.setRoute('/empty.html', (req, res) => { });
       let error = null;
       await page.goto(server.PREFIX + '/empty.html', {timeout: 1}).catch(e => error = e);
-      expect(error.message).toContain('Navigation Timeout Exceeded: 1ms');
+      expect(error.message).toContain('Navigation timeout of 1 ms exceeded');
       expect(error).toBeInstanceOf(puppeteer.errors.TimeoutError);
     });
     it('should fail when exceeding default maximum navigation timeout', async({page, server}) => {
@@ -146,7 +146,7 @@ module.exports.addTests = function({testRunner, expect, puppeteer, CHROME}) {
       let error = null;
       page.setDefaultNavigationTimeout(1);
       await page.goto(server.PREFIX + '/empty.html').catch(e => error = e);
-      expect(error.message).toContain('Navigation Timeout Exceeded: 1ms');
+      expect(error.message).toContain('Navigation timeout of 1 ms exceeded');
       expect(error).toBeInstanceOf(puppeteer.errors.TimeoutError);
     });
     it('should fail when exceeding default maximum timeout', async({page, server}) => {
@@ -155,7 +155,7 @@ module.exports.addTests = function({testRunner, expect, puppeteer, CHROME}) {
       let error = null;
       page.setDefaultTimeout(1);
       await page.goto(server.PREFIX + '/empty.html').catch(e => error = e);
-      expect(error.message).toContain('Navigation Timeout Exceeded: 1ms');
+      expect(error.message).toContain('Navigation timeout of 1 ms exceeded');
       expect(error).toBeInstanceOf(puppeteer.errors.TimeoutError);
     });
     it('should prioritize default navigation timeout over default timeout', async({page, server}) => {
@@ -165,7 +165,7 @@ module.exports.addTests = function({testRunner, expect, puppeteer, CHROME}) {
       page.setDefaultTimeout(0);
       page.setDefaultNavigationTimeout(1);
       await page.goto(server.PREFIX + '/empty.html').catch(e => error = e);
-      expect(error.message).toContain('Navigation Timeout Exceeded: 1ms');
+      expect(error.message).toContain('Navigation timeout of 1 ms exceeded');
       expect(error).toBeInstanceOf(puppeteer.errors.TimeoutError);
     });
     it('should disable timeout when its set to 0', async({page, server}) => {
diff --git a/test/page.spec.js b/test/page.spec.js
index a111ceadc9eaf..b7120c70e2e0f 100644
--- a/test/page.spec.js
+++ b/test/page.spec.js
@@ -18,13 +18,6 @@ const path = require('path');
 const utils = require('./utils');
 const {waitEvent} = utils;
 
-let asyncawait = true;
-try {
-  new Function('async function foo() {await 1}');
-} catch (e) {
-  asyncawait = false;
-}
-
 module.exports.addTests = function({testRunner, expect, headless, puppeteer, CHROME}) {
   const {describe, xdescribe, fdescribe, describe_fails_ffox} = testRunner;
   const {it, fit, xit, it_fails_ffox} = testRunner;
@@ -101,7 +94,7 @@ module.exports.addTests = function({testRunner, expect, headless, puppeteer, CHR
     });
   });
 
-  (asyncawait ? describe : xdescribe)('Async stacks', () => {
+  describe('Async stacks', () => {
     it('should work', async({page, server}) => {
       server.setRoute('/empty.html', (req, res) => {
         res.statusCode = 204;
diff --git a/test/requestinterception.spec.js b/test/requestinterception.spec.js
index e0c7d9b74aa37..99124d8baebfd 100644
--- a/test/requestinterception.spec.js
+++ b/test/requestinterception.spec.js
@@ -146,7 +146,7 @@ module.exports.addTests = function({testRunner, expect, CHROME}) {
       });
       expect(status).toBe(200);
     });
-    it('should works with customizing referer headers', async({page, server}) => {
+    it('should work with custom referer headers', async({page, server}) => {
       await page.setExtraHTTPHeaders({ 'referer': server.EMPTY_PAGE });
       await page.setRequestInterception(true);
       page.on('request', request => {
diff --git a/test/screenshot.spec.js b/test/screenshot.spec.js
index a427abaf6458e..701e208ab05cd 100644
--- a/test/screenshot.spec.js
+++ b/test/screenshot.spec.js
@@ -39,19 +39,6 @@ module.exports.addTests = function({testRunner, expect, product}) {
       });
       expect(screenshot).toBeGolden('screenshot-clip-rect.png');
     });
-    it('should work for offscreen clip', async({page, server}) => {
-      await page.setViewport({width: 500, height: 500});
-      await page.goto(server.PREFIX + '/grid.html');
-      const screenshot = await page.screenshot({
-        clip: {
-          x: 50,
-          y: 600,
-          width: 100,
-          height: 100
-        }
-      });
-      expect(screenshot).toBeGolden('screenshot-offscreen-clip.png');
-    });
     it('should run in parallel', async({page, server}) => {
       await page.setViewport({width: 500, height: 500});
       await page.goto(server.PREFIX + '/grid.html');
diff --git a/test/waittask.spec.js b/test/waittask.spec.js
index 69d44a740c8d2..3a0cba0b94912 100644
--- a/test/waittask.spec.js
+++ b/test/waittask.spec.js
@@ -16,13 +16,6 @@
 
 const utils = require('./utils');
 
-let asyncawait = true;
-try {
-  new Function('async function foo() {await 1}');
-} catch (e) {
-  asyncawait = false;
-}
-
 module.exports.addTests = function({testRunner, expect, product, puppeteer}) {
   const {describe, xdescribe, fdescribe} = testRunner;
   const {it, fit, xit, it_fails_ffox} = testRunner;
@@ -378,7 +371,7 @@ module.exports.addTests = function({testRunner, expect, product, puppeteer}) {
       await page.setContent(`<div class='zombo'>anything</div>`);
       expect(await page.evaluate(x => x.textContent, await waitForSelector)).toBe('anything');
     });
-    (asyncawait ? it : xit)('should have correct stack trace for timeout', async({page, server}) => {
+    it('should have correct stack trace for timeout', async({page, server}) => {
       let error;
       await page.waitForSelector('.zombo', {timeout: 10}).catch(e => error = e);
       expect(error.stack).toContain('waittask.spec.js');