Implement app launch changes for app runtime extension proposal.

extensions/common/api/app_runtime.idl

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Use the <code>chrome.app.runtime</code> API to manage the app lifecycle.
 // The app runtime manages app installation, controls the event page, and can
 // shut down the app at anytime.
 namespace app.runtime {
 
   [inline_doc] dictionary LaunchItem {
@@ skipping 20 matching lines @@
     extensions_page,
     management_api,
     ephemeral_app,
     background,
     kiosk,
     chrome_internal,
     test,
     installed_notification
   };
 
+  // An app can be launched with a specific action in mind, for example, to
+  // create a new note. The type of action the app was launched
+  // with is available inside of the |actionData| field from the LaunchData
+  // instance.
+  enum ActionType {
+    // The user wants to quickly take a new note.
+    new_note
+  };
+
+  // Optional data that includes action-specific launch information.
+  dictionary ActionData {
+    ActionType actionType;
+  };
+
   // Optional data for the launch. Either <code>items</code>, or
   // the pair (<code>url, referrerUrl</code>) can be present for any given
   // launch.
   [inline_doc] dictionary LaunchData {
     // The ID of the file or URL handler that the app is being invoked with.
     // Handler IDs are the top-level keys in the <code>file_handlers</code>
     // and/or <code>url_handlers</code> dictionaries in the manifest.
     DOMString? id;
 
     // The file entries for the <code>onLaunched</code> event triggered by a
@@ skipping 13 matching lines @@
     // kiosk session</a>.
     boolean? isKioskSession;
 
     // Whether the app is being launched in a <a
     // href="https://support.google.com/chrome/a/answer/3017014">Chrome OS
     // public session</a>.
     boolean? isPublicSession;
 
     // Where the app is launched from.
     LaunchSource? source;
+
+    // Contains data that specifies what the <code>ActionType</code> this app

[Devlin, 2016/08/16 00:20:09]

remove "what"

[jdufault, 2016/08/16 21:30:57]

Done.

+    // was launched with. This is null if the app was not launched with a
+    // specific action in mind.

[Devlin, 2016/08/16 00:20:09]

"in mind" is kind of weird phrasing here.  Maybe something more like "with a
specific action intent"?

[jdufault, 2016/08/16 21:30:57]

Done.

+    ActionData? actionData;
   };
 
   // This object specifies details and operations to perform on the embedding
   // request. The app to be embedded can make a decision on whether or not to
   // allow the embedding and what to embed based on the embedder making the
   // request.
   dictionary EmbedRequest {
     DOMString embedderId;
 
     // Optional developer specified data that the app to be embedded can use
@@ skipping 19 matching lines @@
 
     // Fired at Chrome startup to apps that were running when Chrome last shut
     // down, or when apps have been requested to restart from their previous
     // state for other reasons (e.g. when the user revokes access to an app's
     // retained files the runtime will restart the app). In these situations if
     // apps do not have an <code>onRestarted</code> handler they will be sent
     // an <code>onLaunched </code> event instead.
     static void onRestarted();
   };
 };