Google Chrome 5.0.322.2 Dev | 12.57 MB

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Google Chrome 5.0.322.2 Dev | 12.57 MB

Google Chrome is a browser that combines a minimal design with
sophisticated technology to make the web faster, safer, and easier. It
has one box for everything: Type in the address bar and get suggestions
for both search and web pages. Will give you thumbnails of your top
sites; Access your favorite pages instantly with lightning speed from
any new tab.
Google Chrome is an open source web browser developed by Google. Its
software architecture was engineered from scratch (using components
from other open source software including WebKit and Mozilla Firefox)
to cater for the changing needs of users and acknowledging that today
most web sites aren't web pages but web applications. Design goals
include stability, speed, security and a clean, simple and efficient
user interface.

• Sandboxing. Every tab in Chrome is sandboxed, so that a tab can
display contents of a web page and accept user input, but it will not
be able to read the user's desktop or personal files.
Google say they have "taken the existing process boundary and made it
into a jail". There is an exception to this rule; browser plugins such
as Adobe Flash Player do not run within the boundaries of the tab jail,
and so users will still be vulnerable to cross-browser exploits based
on plugins, until plugins have been updated to work with the new Chrome
security. Google has also developed a new phishing blacklist, which
will be built into Chrome, as well as made available via a separate
public API.
• Privacy
Google announces a so-called incognito mode claiming that it "lets you
browse the web in complete privacy because it doesn’t record any of
your activity". No features of this, and no implications of the default
mode with respect to Google's database are given.
• Speed
Speed improvements are a primary design goal.

Stability
• Multiprocessing
The Gears team were considering a multithreaded browser (noting that a
problem with existing web browser implementations was that they are
inherently single-threaded) and Chrome implemented this concept with a
multiprocessing architecture. A separate process is allocated to each
task (eg tabs, plugins), as is the case with modern operating systems.
This prevents tasks from interfering with each other which is good for
both security and stability; an attacker successfully gaining access to
one application does not give them access to all and failure in one
application results in a "Sad Tab" screen of death. This strategy
exacts a fixed per-process cost up front but results in less memory
bloat overall as fragmentation is confined to each process and no
longer results in further memory allocations. To complement this,
Chrome will also feature a process manager which will allow the user to
see how much memory and CPU each tab is using, as well as kill
unresponsive tabs.

User interface
• Features
Chrome has added some commonly used plugin-specific features of other
browsers into the default package, such as an Incognito tab mode, where
no logs of the user activity are stored, and all cookies from the
session are discarded. As a part of Chrome's V8 javascript virtual
machine, pop-up javascript windows will not be shown by default, and
will instead appear as a small bar at the bottom of the interface until
the user wishes to display or hide the window. Chrome will include
support for web applications running alongside other local applications
on the computer. Tabs can be put in a web-app mode, where the omnibar
and controls will be hidden with the goal of allowing the user to use
the web-app without the browser "in the way".
• Rendering Engine
Chrome uses the WebKit rendering engine on advice from the Gears team
because it is simple, memory efficient, useful on embedded devices and
easy to learn for new developers.
• Tabs
While all of the major tabbed web browsers (e.g. Internet Explorer,
Firefox) have been designed with the window as the primary container,
Chrome will put tabs first (similar to Opera). The most immediate way
this will show is in the user interface: tabs will be at the top of the
window, instead of below the controls, as in the other major tabbed
browsers. In Chrome, each tab will be an individual process, and each
will have its own browser controls and address bar (dubbed omnibox), a
design that adds stability to the browser. If one tab fails only one
process dies; the browser can still be used as normal with the
exception of the dead tab. Chrome will also implement a New Tab Page
which shows the nine most visited pages in thumbnails, along with the
most searched on sites, most recently bookmarked sites, and most
recently closed tabs, upon opening a new tab, similar to Opera's "Speed
Dial" page.

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