Bug 1478095 - Implement 'SuggestResult.deletable' and 'omnibox.onDeleteSuggestion' r=mixedpuppy,adw

Differential Revision: https://phabricator.services.mozilla.com/D159475

browser/components/extensions/schemas/omnibox.json

@@ -55,6 +55,11 @@
             "minLength": 1,
             "description": "The text that is displayed in the URL dropdown. Can contain XML-style markup for styling. The supported tags are 'url' (for a literal URL), 'match' (for highlighting text that matched what the user's query), and 'dim' (for dim helper text). The styles can be nested, eg. <dim><match>dimmed match</match></dim>. You must escape the five predefined entities to display them as text: stackoverflow.com/a/1091953/89484 "
           },
+          "deletable": {
+            "type": "boolean",
+            "optional": true,
+            "description": "Whether the suggest result can be deleted by the user."
+          },
           "descriptionStyles": {
             "optional": true,
             "unsupported": true,
@@ -65,7 +70,10 @@
               "description": "The style ranges for the description, as provided by the extension.",
               "properties": {
                 "offset": { "type": "integer" },
-                "type": { "description": "The style type", "$ref": "DescriptionStyleType"},
+                "type": {
+                  "description": "The style type",
+                  "$ref": "DescriptionStyleType"
+                },
                 "length": { "type": "integer", "optional": true }
               }
             }
@@ -106,7 +114,10 @@
               "description": "The style ranges for the description, as provided by the extension.",
               "properties": {
                 "offset": { "type": "integer" },
-                "type": { "description": "The style type", "$ref": "DescriptionStyleType"},
+                "type": {
+                  "description": "The style type",
+                  "$ref": "DescriptionStyleType"
+                },
                 "length": { "type": "integer", "optional": true }
               }
             }
@@ -195,6 +206,17 @@
         "type": "function",
         "description": "User has ended the keyword input session without accepting the input.",
         "parameters": []
+      },
+      {
+        "name": "onDeleteSuggestion",
+        "type": "function",
+        "description": "User has deleted a suggested result.",
+        "parameters": [
+          {
+            "type": "string",
+            "name": "text"
+          }
+        ]
       }
     ]
   }