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<div id="static"><div id="pageData-name" class="pageData">What's New in Extensions?</div>
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<p>
This page lists the API and manifest changes
made in recent releases.
</p>
<ul>
<li> <a href="#17">Google Chrome 17</a> </li>
<li> <a href="#16">Google Chrome 16</a> </li>
<li> <a href="#15">Google Chrome 15</a> </li>
<li> <a href="#14">Google Chrome 14</a> </li>
<li> <a href="#13">Google Chrome 13</a> </li>
<li> <a href="#12">Google Chrome 12</a> </li>
<li> <a href="#11">Google Chrome 11</a> </li>
<li> <a href="#10">Google Chrome 10</a> </li>
<li> <a href="#9">Google Chrome 9</a> </li>
<li> <a href="#8">Google Chrome 8</a> </li>
<li> <a href="#7">Google Chrome 7</a> </li>
<li> <a href="#6">Google Chrome 6</a> </li>
</ul>
<p>
In addition to the changes listed below,
check out the
<a href="experimental.html">experimental APIs</a>.
</p>
<h2 id="17"> Google Chrome 17 </h2>
<h4> New APIs </h4>
<ul>
<li> The
<a href="webRequest.html">web request API</a>
lets you intercept, block, or
modify requests in-flight and
to observe and analyze traffic.
</li>
</ul>
<h4> Manifest changes </h4>
<ul>
<li>
Permissions can be
<a href="permissions.html">optional</a>
for the content setting API, the web navigation API, and
the new web request API.
</li></ul>
<h4> Additions to existing APIs </h4>
<ul>
<li>The management API's
<a href="management.html#type-ExtensionInfo">ExtensionInfo</a> object
now has a <code>disabledReason</code> property.
</li>
</ul>
<h4> Changes to existing APIs </h4>
<ul>
<li>The <a href="omnibox.html">omnibox API</a>
now works in
<a href="manifest.html#incognito">split incognito mode</a>.
</li>
</ul>
<h2 id="16"> Google Chrome 16 </h2>
<h4> New APIs </h4>
<ul>
<li> The
<a href="webNavigation.html">web navigation API</a>
lets extensions receive notifications about the status
of navigation requests.
You can use this API to track navigation events.
</li>
<li> The
<a href="permissions.html">optional permissions API</a>
lets you control when users are presented with permission requests.
</li>
<li> The
<a href="contentSettings.html">content settings API</a>
lets extensions customize Chrome’s behavior
on a per-site basis instead of globally.
You can use this API to control whether websites can use features
such as cookies, JavaScript, and plug-ins.
</li>
</ul>
<h4> Manifest changes </h4>
<ul>
<li> The new
<a href="manifest.html#requirements">requirements</a> field
allows you to declare extension requirements up front.
For example, you can use this field
to specify that your app requires 3D graphics support
in order to use features such as CSS 3D Tranforms or WebGL.
</li>
</ul>
<h4> Additions to existing APIs </h4>
<ul>
<li> The new
<a href="tabs.html#method-query">chrome.tabs.query()</a> method
gets all tabs that have the specified properties or
all tabs if no properties are specified.
</li>
<li>The new
<a href="tabs.html#method-reload">chrome.tabs.reload()</a> method
reloads a tab and includes the option
to preserve the local cache of the reloaded tab.
</li>
<li>The management API's
<a href="management.html#type-ExtensionInfo">ExtensionInfo</a> object
now has an <code>updateURL</code> property.
</li>
<li>
You can now limit the supported locales for an
<a href="external_extensions.html">external extension</a>
by adding the <code>supported_locales</code> attribute
to the <code>external_extensions.json</code>.
</li>
</ul>
<h4> Changes to existing APIs </h4>
<ul>
<li>The methods <code>getAllInWindow()</code> and
<code>getSelected()</code> have been deprecated.
To get details about all tabs in the specified window, use
<a href="tabs.html#method-query">chrome.tabs.query()</a>
with the argument <code>{'windowId': windowID}</code>.
To get the tab that is selected in the specified window, use
<code>chrome.tabs.query()</code>
with the argument <code>{'active': true}</code>.
</li>
<li> You are no longer required
to specify the <code>tabID</code> for the
<a href="tabs.html#method-update">chrome.tabs.update()</a> method.
When not provided,
the <code>tabID</code> defaults to the selected tab of the current window.
</li>
<li>
External extension files on Mac OS can now be owned by users
within a wheel group (or an admin group).
</li>
<li>
The "experimental" permission is no longer required
for the
<a href="windows.html#type-Window">window "panel"</a> type.
By default, the "panel" type creates a popup
unless the <code>--enable-panels</code> flag is set.
</li>
</ul>
<h2 id="15"> Google Chrome 15 </h2>
<p>Chrome 15 had a few minor API additions. Also see the Chrome Web Store’s new
<a href="http://code.google.com/chrome/webstore/docs/inline_installation.html">inline
installation</a> feature, which lets your website help users install extensions
(and apps) without sending them away to the store.</p>
<h4> Manifest changes </h4>
<ul>
<li> The new
<a href="manifest.html#offline_enabled">offline_enabled</a> field
lets you specify that your app works well even without an internet
connection.
</li>
</ul>
<h4> Additions to existing APIs </h4>
<ul>
<li>
You can retrieve permission warnings using the new management API methods
<a href="management.html#method-getPermissionWarningsById">getPermissionWarningsById()</a>
and
<a href="management.html#method-getPermissionWarningsByManifest">getPermissionWarningsByManifest()</a>.
</li>
<li>
The management API’s
<a href="management.html#type-ExtensionInfo">ExtensionInfo</a> object has
a new field, <code>offlineEnabled</code>.
</li>
<li>
You can now <a href="i18n.html">internationalize</a> content script CSS
files by using <code>__MSG_messagename__</code> placeholders.
</li>
</ul>
<h4> Changes to existing APIs </h4>
<ul>
<li>
The callback for the <a href="tabs.html#method-update">tabs.update</a>
method is passed <code>null</code> instead of the tab details if the
extension does not have the "tabs" permission.
</li>
</ul>
<h2 id="14"> Google Chrome 14 </h2>
<h4> New APIs </h4>
<ul>
<li> The <a href="tts.html">tts API</a>
lets extensions generate speech from text. </li>
<li> The <a href="ttsEngine.html">ttsEngine API</a>
lets extensions implement text-to-speech (TTS) engines. </li>
<li> Extensions that are distributed through the Chrome Web Store
can now include Native Client modules.
No special manifest entry is necessary, as you can see from the
<a href="http://code.google.com/p/naclports/source/browse#svn%2Ftrunk%2Fsrc%2Fpackages%2Flibraries%2Fnethack-3.4.3">NetHack example</a>.
For more information, see the
<a href="http://blog.chromium.org/2011/08/native-client-brings-sandboxed-native.html">announcement</a> and the
<a href="http://code.google.com/chrome/nativeclient/">Native Client documentation</a>.
</li></ul>
<h4> Manifest changes </h4>
<ul>
<li> The new
<a href="manifest.html#content_security_policy">content_security_policy</a> field
can help prevent
<a href="http://blog.chromium.org/2011/07/writing-extensions-more-securely.html">cross-site scripting vulnerabilities</a>
in your extension.
</li>
<li> The new <a href="manifest.html#nacl_modules">nacl_modules</a> field
lets you register Native Client modules
as content handlers for MIME types.
</li>
</ul>
<h4> Additions to existing APIs </h4>
<ul>
<li>
<a href="contextMenus.html">Context menu</a> items
can now appear even in documents
that have file:// or chrome:// URLs.
Previously, they were restricted to documents with
http:// or https:// URLs.
</li>
<li>
An optional <code>drawAttention</code> field in
<a href="windows.html#method-update">chrome.windows.update()</a>'s
<code>updateInfo</code> object lets you specify that the window
should entice the user to change focus to it.
</li>
<li>
The new
<a href="bookmarks.html#method-getSubTree">bookmarks.getSubTree()</a>
function lets you retrieve just part of the Bookmarks hierarchy.
</li>
</ul>
<h4> Changes to existing APIs </h4>
<ul>
<li>
The "tabs" permission is no longer required for
<a href="tabs.html#method-remove">tabs.remove</a> and
<a href="tabs.html#event-onRemoved">tabs.onRemoved</a>.
</li>
</ul>
<h2 id="13"> Google Chrome 13 </h2>
<h4> New APIs </h4>
<ul>
<li> The <a href="proxy.html">proxy API</a>
lets extensions manage Chrome's proxy settings.
</li>
<li> The
<a href="types.html#type-ChromeSetting">chrome.types.ChromeSetting</a> prototype
provides an interface to browser settings;
it's used by the proxy API.
</li>
<li> <em>Chrome OS only:</em>
The <a href="fileBrowserHandler.html">fileBrowserHandler API</a>
lets you extend the Chrome OS file browser.
</li>
</ul>
<h4> Manifest changes </h4>
<ul>
<li> A new <code>exclude_matches</code> item
in the "content_scripts" field
lets you target your content script more precisely.
For details, see
<a href="content_scripts.html#match-patterns-globs">Match patterns and globs</a>.
</li>
<li> New "clipboardRead" and "clipboardWrite"
<a href="manifest.html#permissions">permissions</a>
specify capabilities for <code>document.execCommand()</code>.
</li>
</ul>
<h4> Additions to existing APIs </h4>
<ul>
<li> Content scripts can now make
<a href="xhr.html">cross-origin XMLHttpRequests</a>
to the same sites that their parent extension can,
eliminating the need to relay these requests
through a background page.
</li>
<li> You can now use <code>@run-at</code>
in an imported Greasemonkey script
to control when the script is injected.
It works the same way as
<a href="content_scripts.html#run_at"><code>run_at</code></a>
in content scripts.
</li></ul>
<h2 id="12"> Google Chrome 12 </h2>
<h4> Additions to existing APIs </h4>
<ul>
<li> Two new <code>chrome.extension</code>
methods—<a href="extension.html#method-isAllowedFileSchemeAccess">isAllowedFileSchemeAccess()</a> and
<a href="extension.html#method-isAllowedIncognitoAccess">isAllowedIncognitoAccess()</a>—let you
determine whether your extension has increased access,
which the user specifies using the extensions management page
(<b>chrome://extensions</b>).
</li>
<li> The <a href="windows.html#method-create">chrome.windows.create()</a>
method can now take a <code>focused</code> value.
Previously, all new windows had the keyboard focus;
now you can create windows without interrupting the user's typing.
</li>
<li> If the manifest specifies "experimental" permission,
your extension can specify "panel" as the value of
the <code>type</code> field in
the <a href="windows.html#method-create">chrome.windows.create()</a>
method
or the <a href="windows.html#type-Window">Window</a> type.
</li>
<li> The <a href="cookies.html#event-onChanged">onChanged</a>
event of <code>chrome.cookies</code>
now has a <code>cause</code> parameter. </li>
<li> The <code>chrome.contextMenus</code>
<a href="contextMenus.html#method-create">create()</a> and
<a href="contextMenus.html#method-update">update()</a>
methods now let you specify a context value of "frame".
</li></ul>
<h2 id="11"> Google Chrome 11 </h2>
<h4> Changes to existing APIs </h4>
<ul>
<li>
For security reasons, you can no longer call
<a href="tabs.html#method-captureVisibleTab">chrome.tab.captureVisibleTab()</a>
on just any tab.
Instead, you now must have
<a href="manifest.html#permissions">host permission</a>
for the URL displayed by that tab.
To get the previous behavior,
specify <code><all_urls></code> for the host permission.
</li>
</ul>
<h4> Additions to existing APIs </h4>
<ul>
<li>
The management API's
<a href="management.html#type-ExtensionInfo">ExtensionInfo</a> object
now has a <code>homepageUrl</code> property.
</li>
<li> The management API now lets you get the icons of
disabled apps and extensions.
Also, you can now modify the regular icon's URL
to get its disabled equivalent.
See <a href="management.html#type-IconInfo">IconInfo</a> for details.
</li>
<li> The cookies API
<a href="cookies.html#method-set">set()</a>
and <a href="cookies.html#method-remove">remove()</a> methods
can now take callbacks.
</li>
</ul>
<h2 id="10"> Google Chrome 10 </h2>
<h4> Manifest changes </h4>
<ul>
<li>The new <a href="manifest.html#bg">background</a> permission
extends the life of Chrome,
allowing your extension or app
to run even when Chrome has no windows open.
</li>
</ul>
<h4> Additions to existing APIs </h4>
<ul>
<li> The <a href="windows.html#method-create">chrome.windows.create()</a>
method now has a <code>tabId</code> field.
You can use it to move a tab or panel into a new window.
<p class="note">
<b>Note:</b>
This change was incorrectly attributed to Chrome 9
in previous release notes.
</p></li>
</ul>
<h2 id="9"> Google Chrome 9 </h2>
<h4> New APIs </h4>
<ul>
<li>The <a href="omnibox.html">omnibox API</a> allows you to
register a keyword with Chrome's address bar. </li>
</ul>
<h4> Manifest changes </h4>
<ul>
<li> The <a href="manifest.html#homepage_url">homepage_url</a> field
lets you specify the extension or app's homepage. </li>
</ul>
<h4> Additions to existing APIs </h4>
<ul>
<li> The <a href="tabs.html#type-Tab">Tab</a> object
now has a <code>pinned</code> property
that's reflected in various <code>chrome.tabs</code> methods.
For example,
you can <a href="tabs.html#method-create">create</a>
a pinned tab. </li>
<li> The <a href="windows.html#method-create">chrome.windows.create()</a>
method can now take a list of URLs,
letting you create multiple tabs in the new window. </li>
<li> The new
<a href="management.html#method-get">chrome.management.get()</a> method
lets you get information about the specified extension or app. </li>
</ul>
<h2 id="8"> Google Chrome 8 </h2>
<p>
We took a break for Chrome 8.
No API or manifest changes worth noting.
</p>
<h2 id="7"> Google Chrome 7 </h2>
<h4> New APIs </h4>
<ul>
<li> All users can now install
<a href="http://code.google.com/chrome/apps/index.html">apps</a>;
packaged apps can use extension APIs.
</li>
<li> The <a href="management.html">management API</a>
lets you work with installed apps and extensions.
</li>
</ul>
<h4> Manifest changes </h4>
<ul>
<li> Introduced <a href="manifest.html#incognito">split incognito</a>
mode as the default for installable web apps
(also available to extensions).
</li>
<li> The <a href="tabs.html">tabs API</a>
<code>create()</code> and <code>update()</code> methods
no longer require the "tabs" permission, removing one common cause of
<a href="permission_warnings.html">scary dialogs</a>.
</li>
</ul>
<h2 id="6">Google Chrome 6</h2>
<h4> New APIs </h4>
<ul>
<li>The <a href="contextMenus.html">context menus API</a> allows you to
add context menus to pages or specific objects on a page. </li>
<li>The <a href="cookies.html">cookies API</a> allows you to manage the
browser's cookie system. </li>
<li>The <a href="idle.html">idle API</a> allows you to detect when the
machine's idle state changes. </li>
</ul>
<h4> Additions to existing APIs </h4>
<ul>
<li>The <a href="extension.html#method-getViews">chrome.extension.getViews()</a>
method can now return popup views. </li>
<li>A new <a href="windows.html#property-WINDOW_ID_NONE">WINDOW_ID_NONE</a> constant
identifies when focus shifts away from the browser. </li>
<li>The new <a href="tabs.html#method-getCurrent">chrome.tabs.getCurrent()</a> method
returns the tab associated with the currently executing script. </li>
</ul>
<h4> Manifest changes </h4>
<ul>
<li>The <a href="manifest.html#geolocation">geolocation</a> permission
gives an extension access to the user's physical location. </li>
<li><a href="match_patterns.html">Match patterns</a> can now select all
schemes or all URLs. </li>
<li>Access to file:/// URLs no longer triggers the "access to your machine"
security warning, but now requires user opt-in from the extensions
management page. </li>
</ul>
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