Chrome app manifest support for action handlers.

chrome/common/extensions/docs/templates/articles/manifest/action_handlers.html

Index: chrome/common/extensions/docs/templates/articles/manifest/action_handlers.html
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+<h1>Manifest - Action Handlers</h1>
+
+<p>
+The <code>action_handlers</code> manifest property declares which user actions
+or intents that the application supports. An action is essentially an

[Daniel Erat, 2017/01/12 23:55:03]

nit: either "declares user actions or intents that the application supports" or
"declares which user actions or intents the application supports" (including
both "which" and "that" sounds strange)

[jdufault, 2017/01/14 00:30:42]

Done.

+alternative launch point.
+</p>
+
+<p>
+This list contains any of the <code>ActionType</code> values; see the
+<code>actionData</code> entry inside of
+<a href="../app_runtime#event-onLaunched">app.runtime.onLaunched</a>.
+</p>
+
+<h2 id="manifest">Sample manifest.json</h2>
+<pre data-filename="manifest.json">
+{
+  "name": "My note {{platform}}",
+  "action_handlers": ["new_note"],
+  ...
+}
+</pre>