Add custom action support

chrome/common/extensions/api/automation.idl

Index: chrome/common/extensions/api/automation.idl
diff --git a/chrome/common/extensions/api/automation.idl b/chrome/common/extensions/api/automation.idl
index 988635e2852c8b87f8431804995c807770c278fc..cbcf4e64e8f9502eb2572c9f2d99f6241f31ce40 100644
--- a/chrome/common/extensions/api/automation.idl
+++ b/chrome/common/extensions/api/automation.idl
@@ -367,6 +367,11 @@
   // A listener for changes on the <code>AutomationNode</code> tree.
   callback TreeChangeObserver = void(TreeChange treeChange);
 
+  dictionary CustomAction {
+    long id;
+    DOMString description;
+  };
+
   // A single node in an Automation tree.
   [nocompile, noinline_doc] dictionary AutomationNode {
     // The root node of the tree containing this AutomationNode.
@@ -447,6 +452,9 @@
     // The target of an in-page link.
     AutomationNode? inPageLinkTarget;
 
+    // An array of custom actions.

[David Tseng, 2017/05/16 22:18:55]

We'll also need a method to perform the custom action.

[yawano, 2017/06/02 09:02:38]

Done.

+    CustomAction[]? customActions;
+
     //
     // Link attributes.
     //