diff --git a/.travis.yml b/.travis.yml
index 357e537dc..885a33c00 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,11 +14,11 @@ env:
   - JOB=unit-dev
     CHANNEL=dev
     TESTS=vm
-    BROWSERS=Dartium
+    BROWSERS=DartiumWithWebPlatform
   - JOB=unit-stable
     CHANNEL=stable
     TESTS=vm
-    BROWSERS=Dartium
+    BROWSERS=DartiumWithWebPlatform
   global:
   - FIREFOX_VERSION="29.0"
   - CHROME_BIN=/usr/bin/google-chrome
diff --git a/karma.conf.js b/karma.conf.js
index 7ebb473d6..d1afab100 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -44,10 +44,14 @@ module.exports = function(config) {
     },
 
     customLaunchers: {
-      ChromeNoSandbox: { base: 'Chrome', flags: ['--no-sandbox'] }
+      ChromeNoSandbox: { base: 'Chrome', flags: ['--no-sandbox'] },
+      // Only needed for Chrome 34.  These features are enabled by default in Chrome 35.
+      DartiumWithWebPlatform: {
+        base: 'Dartium',
+        flags: ['--enable-experimental-web-platform-features'] }
     },
 
-    browsers: ['Dartium'],
+    browsers: ['DartiumWithWebPlatform'],
 
     preprocessors: {
       'test/core/parser/generated_getter_setter.dart': ['parser-getter-setter']