diff --git a/packages/benchpress/src/firefox_extension/.gitignore b/packages/benchpress/src/firefox_extension/.gitignore
deleted file mode 100644
index fc1a520a40..0000000000
--- a/packages/benchpress/src/firefox_extension/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-*.xpi
-addon-sdk*
diff --git a/packages/benchpress/src/firefox_extension/data/installed_script.ts b/packages/benchpress/src/firefox_extension/data/installed_script.ts
deleted file mode 100644
index 1e14d5cc6b..0000000000
--- a/packages/benchpress/src/firefox_extension/data/installed_script.ts
+++ /dev/null
@@ -1,38 +0,0 @@
-/**
- * @license
- * Copyright Google Inc. All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
-
-declare var exportFunction: any;
-declare var unsafeWindow: any;
-
-exportFunction(function() {
-  const curTime = unsafeWindow.performance.now();
-  (<any>self).port.emit('startProfiler', curTime);
-}, unsafeWindow, {defineAs: 'startProfiler'});
-
-exportFunction(function() {
-  (<any>self).port.emit('stopProfiler');
-}, unsafeWindow, {defineAs: 'stopProfiler'});
-
-exportFunction(function(cb: Function) {
-  (<any>self).port.once('perfProfile', cb);
-  (<any>self).port.emit('getProfile');
-}, unsafeWindow, {defineAs: 'getProfile'});
-
-exportFunction(function() {
-  (<any>self).port.emit('forceGC');
-}, unsafeWindow, {defineAs: 'forceGC'});
-
-exportFunction(function(name: string) {
-  const curTime = unsafeWindow.performance.now();
-  (<any>self).port.emit('markStart', name, curTime);
-}, unsafeWindow, {defineAs: 'markStart'});
-
-exportFunction(function(name: string) {
-  const curTime = unsafeWindow.performance.now();
-  (<any>self).port.emit('markEnd', name, curTime);
-}, unsafeWindow, {defineAs: 'markEnd'});
diff --git a/packages/benchpress/src/firefox_extension/lib/main.ts b/packages/benchpress/src/firefox_extension/lib/main.ts
deleted file mode 100644
index 348014637c..0000000000
--- a/packages/benchpress/src/firefox_extension/lib/main.ts
+++ /dev/null
@@ -1,80 +0,0 @@
-/**
- * @license
- * Copyright Google Inc. All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
-
-const {Cc, Ci, Cu} = require('chrome');
-const os = Cc['@mozilla.org/observer-service;1'].getService(Ci.nsIObserverService);
-const ParserUtil = require('./parser_util');
-
-class Profiler {
-  private _profiler: any;
-  // TODO(issue/24571): remove '!'.
-  private _markerEvents !: any[];
-  // TODO(issue/24571): remove '!'.
-  private _profilerStartTime !: number;
-
-  constructor() { this._profiler = Cc['@mozilla.org/tools/profiler;1'].getService(Ci.nsIProfiler); }
-
-  start(entries: any, interval: any, features: any, timeStarted: any) {
-    this._profiler.StartProfiler(entries, interval, features, features.length);
-    this._profilerStartTime = timeStarted;
-    this._markerEvents = [];
-  }
-
-  stop() { this._profiler.StopProfiler(); }
-
-  getProfilePerfEvents() {
-    const profileData = this._profiler.getProfileData();
-    let perfEvents = ParserUtil.convertPerfProfileToEvents(profileData);
-    perfEvents = this._mergeMarkerEvents(perfEvents);
-    perfEvents.sort(function(event1: any, event2: any) {
-      return event1.ts - event2.ts;
-    });  // Sort by ts
-    return perfEvents;
-  }
-
-  /** @internal */
-  private _mergeMarkerEvents(perfEvents: any[]): any[] {
-    this._markerEvents.forEach(function(markerEvent) { perfEvents.push(markerEvent); });
-    return perfEvents;
-  }
-
-  addStartEvent(name: string, timeStarted: number) {
-    this._markerEvents.push({ph: 'B', ts: timeStarted - this._profilerStartTime, name: name});
-  }
-
-  addEndEvent(name: string, timeEnded: number) {
-    this._markerEvents.push({ph: 'E', ts: timeEnded - this._profilerStartTime, name: name});
-  }
-}
-
-function forceGC() {
-  Cu.forceGC();
-  os.notifyObservers(null, 'child-gc-request', null);
-}
-
-const mod = require('sdk/page-mod');
-const data = require('sdk/self').data;
-const profiler = new Profiler();
-mod.PageMod({
-  include: ['*'],
-  contentScriptFile: data.url('installed_script.js'),
-  onAttach: (worker: any) => {
-    worker.port.on(
-        'startProfiler',
-        (timeStarted: any) => profiler.start(
-            /* = profiler memory */ 3000000, 0.1, ['leaf', 'js', 'stackwalk', 'gc'], timeStarted));
-    worker.port.on('stopProfiler', () => profiler.stop());
-    worker.port.on(
-        'getProfile', () => worker.port.emit('perfProfile', profiler.getProfilePerfEvents()));
-    worker.port.on('forceGC', forceGC);
-    worker.port.on(
-        'markStart', (name: string, timeStarted: any) => profiler.addStartEvent(name, timeStarted));
-    worker.port.on(
-        'markEnd', (name: string, timeEnded: any) => profiler.addEndEvent(name, timeEnded));
-  }
-});
diff --git a/packages/benchpress/src/firefox_extension/lib/parser_util.ts b/packages/benchpress/src/firefox_extension/lib/parser_util.ts
deleted file mode 100644
index 6bccc3c876..0000000000
--- a/packages/benchpress/src/firefox_extension/lib/parser_util.ts
+++ /dev/null
@@ -1,92 +0,0 @@
-/**
- * @license
- * Copyright Google Inc. All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
-
-/**
- * @param {Object} perfProfile The perf profile JSON object.
- * @return {Object[]} An array of recognized events that are captured
- *     within the perf profile.
- */
-export function convertPerfProfileToEvents(perfProfile: any): any[] {
-  const inProgressEvents = new Map();                 // map from event name to start time
-  const finishedEvents: {[key: string]: any}[] = [];  // Event[] finished events
-  const addFinishedEvent = function(eventName: string, startTime: number, endTime: number) {
-    const categorizedEventName = categorizeEvent(eventName);
-    let args: {[key: string]: any}|undefined = undefined;
-    if (categorizedEventName == 'gc') {
-      // TODO: We cannot measure heap size at the moment
-      args = {usedHeapSize: 0};
-    }
-    if (startTime == endTime) {
-      // Finished instantly
-      finishedEvents.push({ph: 'X', ts: startTime, name: categorizedEventName, args: args});
-    } else {
-      // Has duration
-      finishedEvents.push({ph: 'B', ts: startTime, name: categorizedEventName, args: args});
-      finishedEvents.push({ph: 'E', ts: endTime, name: categorizedEventName, args: args});
-    }
-  };
-
-  const samples = perfProfile.threads[0].samples;
-  // In perf profile, firefox samples all the frames in set time intervals. Here
-  // we go through all the samples and construct the start and end time for each
-  // event.
-  for (let i = 0; i < samples.length; ++i) {
-    const sample = samples[i];
-    const sampleTime = sample.time;
-
-    // Add all the frames into a set so it's easier/faster to find the set
-    // differences
-    const sampleFrames = new Set();
-    sample.frames.forEach(function(frame: {[key: string]: any}) {
-      sampleFrames.add(frame['location']);
-    });
-
-    // If an event is in the inProgressEvents map, but not in the current sample,
-    // then it must have just finished. We add this event to the finishedEvents
-    // array and remove it from the inProgressEvents map.
-    const previousSampleTime = (i == 0 ? /* not used */ -1 : samples[i - 1].time);
-    inProgressEvents.forEach(function(startTime, eventName) {
-      if (!(sampleFrames.has(eventName))) {
-        addFinishedEvent(eventName, startTime, previousSampleTime);
-        inProgressEvents.delete(eventName);
-      }
-    });
-
-    // If an event is in the current sample, but not in the inProgressEvents map,
-    // then it must have just started. We add this event to the inProgressEvents
-    // map.
-    sampleFrames.forEach(function(eventName) {
-      if (!(inProgressEvents.has(eventName))) {
-        inProgressEvents.set(eventName, sampleTime);
-      }
-    });
-  }
-
-  // If anything is still in progress, we need to included it as a finished event
-  // since recording ended.
-  const lastSampleTime = samples[samples.length - 1].time;
-  inProgressEvents.forEach(function(startTime, eventName) {
-    addFinishedEvent(eventName, startTime, lastSampleTime);
-  });
-
-  // Remove all the unknown categories.
-  return finishedEvents.filter(function(event) { return event['name'] != 'unknown'; });
-}
-
-// TODO: this is most likely not exhaustive.
-export function categorizeEvent(eventName: string): string {
-  if (eventName.indexOf('PresShell::Paint') > -1) {
-    return 'render';
-  } else if (eventName.indexOf('FirefoxDriver.prototype.executeScript') > -1) {
-    return 'script';
-  } else if (eventName.indexOf('forceGC') > -1) {
-    return 'gc';
-  } else {
-    return 'unknown';
-  }
-}
diff --git a/packages/benchpress/src/firefox_extension/lib/test_helper.ts b/packages/benchpress/src/firefox_extension/lib/test_helper.ts
deleted file mode 100644
index 97cfd2519d..0000000000
--- a/packages/benchpress/src/firefox_extension/lib/test_helper.ts
+++ /dev/null
@@ -1,51 +0,0 @@
-/**
- * @license
- * Copyright Google Inc. All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
-
-const q = require('q');
-const FirefoxProfile = require('firefox-profile');
-const jpm = require('jpm/lib/xpi');
-const pathUtil = require('path');
-
-const PERF_ADDON_PACKAGE_JSON_DIR = '..';
-
-exports.getAbsolutePath = function(path: string) {
-  const normalizedPath = pathUtil.normalize(path);
-  if (pathUtil.resolve(normalizedPath) == normalizedPath) {
-    // Already absolute path
-    return normalizedPath;
-  } else {
-    return pathUtil.join(__dirname, normalizedPath);
-  }
-};
-
-exports.getFirefoxProfile = function(extensionPath: string) {
-  const deferred = q.defer();
-
-  const firefoxProfile = new FirefoxProfile();
-  firefoxProfile.addExtensions([extensionPath], () => {
-    firefoxProfile.encoded((err: any, encodedProfile: string) => {
-      const multiCapabilities = [{browserName: 'firefox', firefox_profile: encodedProfile}];
-      deferred.resolve(multiCapabilities);
-    });
-  });
-
-  return deferred.promise;
-};
-
-exports.getFirefoxProfileWithExtension = function() {
-  const absPackageJsonDir = pathUtil.join(__dirname, PERF_ADDON_PACKAGE_JSON_DIR);
-  const packageJson = require(pathUtil.join(absPackageJsonDir, 'package.json'));
-
-  const savedCwd = process.cwd();
-  process.chdir(absPackageJsonDir);
-
-  return jpm(packageJson).then((xpiPath: string) => {
-    process.chdir(savedCwd);
-    return exports.getFirefoxProfile(xpiPath);
-  });
-};
diff --git a/packages/benchpress/src/firefox_extension/package.json b/packages/benchpress/src/firefox_extension/package.json
deleted file mode 100644
index f3e5ca2608..0000000000
--- a/packages/benchpress/src/firefox_extension/package.json
+++ /dev/null
@@ -1 +0,0 @@
-{ "version" : "0.0.1", "main" : "lib/main.js", "name" : "ffperf-addon" }
diff --git a/packages/benchpress/test/firefox_extension/conf.ts b/packages/benchpress/test/firefox_extension/conf.ts
deleted file mode 100644
index 4be1898f2b..0000000000
--- a/packages/benchpress/test/firefox_extension/conf.ts
+++ /dev/null
@@ -1,21 +0,0 @@
-/**
- * @license
- * Copyright Google Inc. All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
-
-require('core-js');
-require('reflect-metadata');
-const testHelper = require('../../src/firefox_extension/lib/test_helper.js');
-
-exports.config = {
-  specs: ['spec.js', 'sample_benchmark.js'],
-
-  framework: 'jasmine2',
-
-  jasmineNodeOpts: {showColors: true, defaultTimeoutInterval: 1200000},
-
-  getMultiCapabilities: function() { return testHelper.getFirefoxProfileWithExtension(); }
-};
diff --git a/packages/benchpress/test/firefox_extension/parser_util_spec.ts b/packages/benchpress/test/firefox_extension/parser_util_spec.ts
deleted file mode 100644
index 1669d07036..0000000000
--- a/packages/benchpress/test/firefox_extension/parser_util_spec.ts
+++ /dev/null
@@ -1,100 +0,0 @@
-/**
- * @license
- * Copyright Google Inc. All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
-
-import {convertPerfProfileToEvents} from '../../src/firefox_extension/lib/parser_util';
-
-function assertEventsEqual(actualEvents: any[], expectedEvents: any[]) {
-  expect(actualEvents.length == expectedEvents.length);
-  for (let i = 0; i < actualEvents.length; ++i) {
-    const actualEvent = actualEvents[i];
-    const expectedEvent = expectedEvents[i];
-    for (const key in actualEvent) {
-      expect(actualEvent[key]).toEqual(expectedEvent[key]);
-    }
-  }
-}
-
-{
-  describe('convertPerfProfileToEvents', function() {
-    it('should convert single instantaneous event', function() {
-      const profileData = {
-        threads: [
-          {samples: [{time: 1, frames: [{location: 'FirefoxDriver.prototype.executeScript'}]}]}
-        ]
-      };
-      const perfEvents = convertPerfProfileToEvents(profileData);
-      assertEventsEqual(perfEvents, [{ph: 'X', ts: 1, name: 'script'}]);
-    });
-
-    it('should convert single non-instantaneous event', function() {
-      const profileData = {
-        threads: [{
-          samples: [
-            {time: 1, frames: [{location: 'FirefoxDriver.prototype.executeScript'}]},
-            {time: 2, frames: [{location: 'FirefoxDriver.prototype.executeScript'}]},
-            {time: 100, frames: [{location: 'FirefoxDriver.prototype.executeScript'}]}
-          ]
-        }]
-      };
-      const perfEvents = convertPerfProfileToEvents(profileData);
-      assertEventsEqual(
-          perfEvents, [{ph: 'B', ts: 1, name: 'script'}, {ph: 'E', ts: 100, name: 'script'}]);
-    });
-
-    it('should convert multiple instantaneous events', function() {
-      const profileData = {
-        threads: [{
-          samples: [
-            {time: 1, frames: [{location: 'FirefoxDriver.prototype.executeScript'}]},
-            {time: 2, frames: [{location: 'PresShell::Paint'}]}
-          ]
-        }]
-      };
-      const perfEvents = convertPerfProfileToEvents(profileData);
-      assertEventsEqual(
-          perfEvents, [{ph: 'X', ts: 1, name: 'script'}, {ph: 'X', ts: 2, name: 'render'}]);
-    });
-
-    it('should convert multiple mixed events', function() {
-      const profileData = {
-        threads: [{
-          samples: [
-            {time: 1, frames: [{location: 'FirefoxDriver.prototype.executeScript'}]},
-            {time: 2, frames: [{location: 'PresShell::Paint'}]},
-            {time: 5, frames: [{location: 'FirefoxDriver.prototype.executeScript'}]},
-            {time: 10, frames: [{location: 'FirefoxDriver.prototype.executeScript'}]}
-          ]
-        }]
-      };
-      const perfEvents = convertPerfProfileToEvents(profileData);
-      assertEventsEqual(perfEvents, [
-        {ph: 'X', ts: 1, name: 'script'}, {ph: 'X', ts: 2, name: 'render'},
-        {ph: 'B', ts: 5, name: 'script'}, {ph: 'E', ts: 10, name: 'script'}
-      ]);
-    });
-
-    it('should add args to gc events', function() {
-      const profileData = {threads: [{samples: [{time: 1, frames: [{location: 'forceGC'}]}]}]};
-      const perfEvents = convertPerfProfileToEvents(profileData);
-      assertEventsEqual(perfEvents, [{ph: 'X', ts: 1, name: 'gc', args: {usedHeapSize: 0}}]);
-    });
-
-    it('should skip unknown events', function() {
-      const profileData = {
-        threads: [{
-          samples: [
-            {time: 1, frames: [{location: 'FirefoxDriver.prototype.executeScript'}]},
-            {time: 2, frames: [{location: 'foo'}]}
-          ]
-        }]
-      };
-      const perfEvents = convertPerfProfileToEvents(profileData);
-      assertEventsEqual(perfEvents, [{ph: 'X', ts: 1, name: 'script'}]);
-    });
-  });
-}
diff --git a/packages/benchpress/test/firefox_extension/sample_benchmark_spec.ts b/packages/benchpress/test/firefox_extension/sample_benchmark_spec.ts
deleted file mode 100644
index 2657a2347a..0000000000
--- a/packages/benchpress/test/firefox_extension/sample_benchmark_spec.ts
+++ /dev/null
@@ -1,45 +0,0 @@
-/**
- * @license
- * Copyright Google Inc. All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
-
-import {$, browser} from 'protractor';
-
-const benchpress = require('../../index.js');
-
-// TODO: this test is currnetly failing. it seems that it didn't run on the ci for a while
-xdescribe('deep tree baseline', function() {
-  const runner = new benchpress.Runner([
-    // use protractor as Webdriver client
-    benchpress.SeleniumWebDriverAdapter.PROTRACTOR_PROVIDERS,
-    // use RegressionSlopeValidator to validate samples
-    benchpress.Validator.bind(benchpress.RegressionSlopeValidator),
-    // use 10 samples to calculate slope regression
-    benchpress.bind(benchpress.RegressionSlopeValidator.SAMPLE_SIZE).toValue(20),
-    // use the script metric to calculate slope regression
-    benchpress.bind(benchpress.RegressionSlopeValidator.METRIC).toValue('scriptTime'),
-    benchpress.bind(benchpress.Options.FORCE_GC).toValue(true)
-  ]);
-
-
-  it('should be fast!', function(done) {
-    browser.ignoreSynchronization = true;
-    browser.get('http://localhost:8001/playground/src/benchpress/');
-
-    /*
-     * Tell benchpress to click the buttons to destroy and re-create the tree for each sample.
-     * Benchpress will log the collected metrics after each sample is collected, and will stop
-     * sampling as soon as the calculated regression slope for last 20 samples is stable.
-     */
-    runner
-        .sample({
-          id: 'baseline',
-          execute: function() { $('button').click(); },
-          providers: [benchpress.bind(benchpress.Options.SAMPLE_DESCRIPTION).toValue({depth: 9})]
-        })
-        .then(done, done.fail);
-  });
-});
diff --git a/packages/benchpress/test/firefox_extension/spec.ts b/packages/benchpress/test/firefox_extension/spec.ts
deleted file mode 100644
index 754ea37212..0000000000
--- a/packages/benchpress/test/firefox_extension/spec.ts
+++ /dev/null
@@ -1,45 +0,0 @@
-/**
- * @license
- * Copyright Google Inc. All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
-
-/* tslint:disable:no-console  */
-import {browser} from 'protractor';
-
-const assertEventsContainsName = function(events: any[], eventName: string) {
-  let found = false;
-  for (let i = 0; i < events.length; ++i) {
-    if (events[i].name == eventName) {
-      found = true;
-      break;
-    }
-  }
-  expect(found).toBeTruthy();
-};
-
-// TODO: this test is currnetly failing. it seems that it didn't run on the ci for a while
-xdescribe('firefox extension', function() {
-  const TEST_URL = 'http://localhost:8001/playground/src/hello_world/index.html';
-
-  it('should measure performance', function() {
-    browser.sleep(3000);  // wait for extension to load
-
-    browser.driver.get(TEST_URL);
-
-    browser.executeScript('window.startProfiler()').then(function() {
-      console.log('started measuring perf');
-    });
-
-    browser.executeAsyncScript('setTimeout(arguments[0], 1000);');
-    browser.executeScript('window.forceGC()');
-
-    browser.executeAsyncScript('var cb = arguments[0]; window.getProfile(cb);')
-        .then(function(profile: any) {
-          assertEventsContainsName(profile, 'gc');
-          assertEventsContainsName(profile, 'script');
-        });
-  });
-});