Import chrome idl into third_party

third_party/chrome/idl/experimental_infobars.json

+// Copyright (c) 2012 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.
+
+[
+  {
+    "namespace": "experimental.infobars",
+    "dependencies": [ "windows" ],
+    "types": [],
+    "functions": [
+      {
+        "name": "show",
+        "type": "function",
+        "description": "Shows an infobar in the specified tab. The infobar will be closed automatically when the tab navigates. Use window.close() to close the infobar before then.",
+        "parameters": [
+          {
+            "name": "details",
+            "type": "object",
+            "properties": {
+              "tabId": {
+                "type": "integer",
+                "description": "The tab id for the tab to display the infobar in."
+              },
+              "path": {
+                "type": "string",
+                "description": "The html file that contains the infobar."
+              },
+              "height": {
+                "type": "integer",
+                "description": "The height (in pixels) of the infobar to show. If omitted, the default infobar height will be used.",
+                "optional": true,
+                "minimum": 0,
+                "maximum": 72
+              }
+            }
+          },
+          {
+            "type": "function",
+            "name": "callback",
+            "optional": true,
+            "parameters": [
+              {
+                "name": "window", "$ref": "windows.Window", "description": "Contains details about the window in which the infobar was created."
+              }
+            ]
+          }
+        ]
+      }
+    ]
+  }
+]