Updating the doc to reflect the new experimental.keybinding API.

chrome/common/extensions/docs/static/experimental.keybinding.html

+<!-- BEGIN AUTHORED CONTENT -->
+<p>
+The keybinding API allows you to add keyboard shortcuts that trigger actions in
+your extension. An action can be opening the browser action or page action popup
+or sending a command to the extension.
+</p>
+
+<h2 id="manifest">Manifest</h2>
+<p>
+In addition to the "experimental" permission you must declare the "keybinding"
+permission in your extension's manifest to use this API.
+</p>
+
+<pre>{
+  "name": "My extension",
+  ...
+<b>  "permissions": [
+    "experimental", "keybinding",

[Mike West, 2012/02/24 15:14:28]

Nit: Separate lines for clarity.

+  ]</b>,
+  ...
+}</pre>
+
+<h2 id="usage">Usage</h2>
+<p>The keybinding API allows you to define specific commands, and bind them to a
+default key combination. Each command your extension accepts must be listed in
+the manifest as an attribute of the 'commands' manifest key. Note: Combinations
+that involve Ctrl+Alt are not permitted in order to avoid conflicts with the
+AltGr key.</p>
+
+<pre>{
+  "name": "My extension",
+  ...
+<b>  "commands": {
+    "toggle-feature-foo": {
+      "key": "Ctrl+Shift+Y",
+      "description": "Toggle feature foo"
+    },
+    "browserAction": {
+      "key": "Ctrl+Shift+B"
+    },
+    "pageAction": {
+      "key": "Alt+P"
+    }
+
+  }</b>,
+  ...
+}</pre>
+
+<p>In your background page, you can bind a handler to each of the commands
+defined in the manifest (except for 'browserAction' and 'pageAction') via
+onCommand.addListener. For example:</p>
+
+<pre>
+chrome.experimental.keybinding.onCommand.addListener(function(command) {
+  console.log('Command:', command);
+});
+</pre>
+
+<p>The 'browserAction' and 'pageAction' commands are reserved for the action of
+opening your extension's popups. They won't normally generate events that you
+can handle. If you need to take action based on your popup opening, consider
+listening for an 'onDomReady' event inside your popup's code.
+</p>
+<!-- END AUTHORED CONTENT -->