Chromium Blog
News and developments from the open source browser project
Run Chrome Apps on mobile using Apache Cordova
Dienstag, 28. Januar 2014
In September we introduced a
new breed of Chrome Apps
that work offline by default and act like native applications on the host operating system. These Chrome Apps are currently available on all desktop platforms. Today we're expanding their reach to mobile platforms with an early developer preview of a toolchain based on
Apache Cordova
, an open-source mobile development framework for building native mobile apps using HTML, CSS and JavaScript.
The toolchain wraps your Chrome App with a native application shell and enables you to distribute your app via Google Play and the Apple App Store. We provide a simple
developer workflow
for packaging a Chrome App natively for mobile platforms. You can run your Chrome App on a device or emulator using the command-line or an IDE. Alternatively, you can use the
Chrome Apps Developer Tool
to run your app on an Android device without the need to install an IDE or the mobile platform’s SDK.
We’ve made many of the core
Chrome APIs
available to Chrome Apps running natively on mobile, including:
identity
- sign-in users using OAuth2 without prompting for passwords
payments
- sell virtual goods within your mobile app
pushMessaging
- push messages to your app from your server
sockets
- send and receive data over the network using TCP and UDP
notifications
(currently Android only) - send rich notifications from your mobile app
storage
- store and retrieve key-value data locally
syncFileSystem
- store and retrieve files backed by Google Drive
alarms
- run tasks periodically
In addition to the above Chrome APIs, you have access to a
wide range of APIs
supported in the Cordova platform.
For web developers, this toolchain provides a simple workflow for extending the reach of Chrome Apps to users on mobile platforms. The toolchain is in developer preview mode, and we expect to continually improve it based on your feedback. To get started, take a look at our
dev workflow
and
sample apps
. As always, we welcome your feedback on
Stack Overflow
, our
G+ Developers page
, or our
developer forum
.
Andrew Grieve, Software Engineer and WebView Wrangler
Show off your security skills: announcing Pwnium 4 targeting Chrome OS
Donnerstag, 23. Januar 2014
Security is a
core tenet
of Chromium, which is why we hold
regular competitions
to learn from security researchers. Contests like Pwnium help us make Chromium even more secure. This year Pwnium 4 will once again set sights on Chrome OS, and will be hosted in March at the
CanSecWest
security conference in Vancouver.
With a total of $2.71828 million USD in the pot (
mathematical constant
e
for the geeks at heart), we’ll issue Pwnium rewards for eligible Chrome OS exploits at the following levels:
$110,000 USD: browser or system-level compromise in guest mode or as a logged-in user, delivered via a web page.
$150,000 USD: compromise with device persistence: guest to guest with interim reboot, delivered via a web page.
New this year, we will also consider significant bonuses for demonstrating a particularly impressive or surprising exploit. Potential examples include defeating
kASLR
, exploiting memory corruption in the 64-bit browser process or exploiting the kernel directly from a renderer process.
Past Pwnium competitions have focused on Intel-based Chrome OS devices, but this year researchers can choose between an ARM-based Chromebook, the
HP Chromebook 11
(WiFi), or the
Acer C720 Chromebook
(2GB WiFi) that is based on the Intel Haswell microarchitecture. The attack must be demonstrated against one of these devices running the then-current stable version of Chrome OS.
Any software included with the default installation may be used as part of the attack. For those without access to a physical device, the
Chromium OS developer’s guide
offers assistance on getting up and running inside a virtual machine, but note that a virtual environment might differ from the physical devices where the attack must be demonstrated.
To make sure everyone has enough time to demonstrate their exploit, we will require participants to register in advance for a timeslot. To register, e-mail
pwnium4@chromium.org
.
Registration will close at 5:00 p.m. PST Monday, March 10th, 2014
. Only exploits demonstrated on time in this specifically-arranged window will be eligible for a reward.
The
official rules
contain more details, but standard Pwnium rules apply: the deliverable is the full exploit, with explanations for all individual bugs used (which must be unknown); and exploits should be served from a password-authenticated and HTTPS-supported Google App Engine URL.
See you in Vancouver!
Signed by Jorge Lucángeli Obes, Security Engineer and Master of Ceremonies
Chrome 33 Beta: Custom Elements, Web Speech, and more
Donnerstag, 16. Januar 2014
Today’s Chrome
Beta
channel release kicks off the new year with a slew of new features for developers ranging from Custom Elements, to web speech synthesis and improved WebFont downloading. Unless otherwise noted, changes apply to desktop versions of Chrome and Chrome for Android.
Custom Elements
With
Custom Elements
, web developers can define new types of HTML elements to use in their web applications. The spec is one of several new API primitives landing under the
Web Components
umbrella. It brings abstraction and modularity to the web platform by allowing developers to:
Define new HTML/DOM elements
Create elements that extend from other elements
Logically bundle together custom functionality into a single tag
Extend the API of existing DOM elements
Custom Elements allows developers to architect their apps in much cleaner ways. For example, here's what the markup for
a demo chat app written with Custom Elements
looks like:
Web Speech API - Synthesis
The
Web Speech API
enables web developers to add
speech recognition
and synthesis to their web pages. We added the recognition part
last year
, and today’s release is the first to include
speech synthesis
. For example, your dictations could be
synthesized
to play back in a different language.
NPAPI deprecation update
As described in the original NPAPI deprecation
announcement
, Chrome has begun blocking webpage-instantiated NPAPI plug-ins by default on the Stable channel. Mac and Windows NPAPI support will be completely phased out by the end of the year, and on Linux Chromium will
no longer support NPAPI plug-ins
starting as early as April.
Other web platform changes in this release
The
requestAutocomplete API
for easy web payments is now available on Mac.
The
Page Visibility API
has been
unprefixed
.
WebFont downloading has
been optimized
so that fonts (at the median) are available before Blink layout is done, meaning that the net latency impact of using a webfont is usually zero.
The Blink CSS Animations and Transitions implementations are now powered by the new
Web Animations model
. This change should not affect developers or sites;
let us know
if it does.
Chrome now supports the latest version of the
Web Notification API
. We'll be deprecating support for the
legacy API
down the road, so please update your websites if they're using it.
Google Chrome Frame has been retired. Please read our June 2013 Chromium
blog post
for additional details and background.
Visit
chromestatus.com
for a complete overview of Chrome’s developer features.
Chrome Dev Summit recap
In late November we also held the
Chrome Dev Summit
, a two-day, single-track conference with over 300 web developers and Chrome engineers. The talks—which were recorded and livestreamed—covered a range of topics including
Polymer
,
new media APIs in Chrome for Android
,
Mobile DevTools
, and a
ton
of
performance
tips
. Check out the
full list
of recorded talks, including the
keynote
and
Q&A panel
.
Circle
+Google Chrome Developers
for more updates!
Posted by
<software-engineer title="Element Customizer">Dominic Cooney</software-engineer>
Udacity Mobile Web Development Course Now Live
Montag, 6. Januar 2014
As a web developer, you know that your users are moving to mobile platforms in droves. Beginning today, you can learn how to apply your web development skills to build great mobile web apps with
Mobile Web Development (CS256)
—a new Udacity MOOC training course.
In each of the course’s 12 lessons, you can watch short videos teaching you the latest mobile web development techniques, and follow a series of quizzes and interactive code challenges that will test your knowledge. Specifically, you will learn how to build web experiences that adapt to different screen sizes, how to program touch interaction, and how to configure web experiences to work great even when network conditions are suboptimal. You’ll also learn to investigate performance in mobile applications using Chrome DevTools, with a strong emphasis on mobile networking.
On Tuesday, January 7th at 9:30 a.m. PST, we are hosting an
introductory Google Developers Live session
with special guest and Udacity CEO, Sebastian Thrun. In this session we will tell you all about the content of the course and answer your questions live. You can add this event to your calendar and
vote for your questions
.
We’ll also be running a study group for the first several weeks of the course. The study group will be livestreamed (and recorded) from the Google Developer Live studio and course instructors Sean, Chris, and Peter will be there to answer any questions you might have and help you out with the course material.
We hope you’ll
try out the new course
and start building awesome mobile web experiences!
Posted by Chris Wilson, Developer Advocate and Multi-device Prestidigitator, and Peter Lubbers, Program Manager and MOOC Manufacturer.
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