Import chrome idl into third_party

third_party/chrome/idl/web_request_internal.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": "webRequestInternal",
+    "dependencies": ["webRequest"],
+    "nodoc": true,
+    "internal": true,
+    "functions": [
+      {
+        "name": "addEventListener",
+        "type": "function",
+        "description": "Used internally to implement the special form of addListener for the webRequest events.",
+        "parameters": [
+          {"type": "function", "name": "callback"},
+          {
+            "$ref": "webRequest.RequestFilter",
+            "name": "filter",
+            "description": "A set of filters that restricts the events that will be sent to this listener."
+          },
+          {
+            "type": "array",
+            "optional": true,
+            "name": "extraInfoSpec",
+            "description": "Array of extra information that should be passed to the listener function.",
+            "items": {
+              "type": "string",
+              "enum": ["requestHeaders", "responseHeaders", "blocking", "asyncBlocking", "requestBody"]
+            }
+          },
+          {"type": "string", "name": "eventName"},
+          {"type": "string", "name": "subEventName"}
+        ]
+      },
+      {
+        "name": "eventHandled",
+        "type": "function",
+        "description": "Used internally to send a response for a blocked event.",
+        "parameters": [
+          {"type": "string", "name": "eventName"},
+          {"type": "string", "name": "subEventName"},
+          {"type": "string", "name": "requestId"},
+          {
+            "$ref": "webRequest.BlockingResponse",
+            "optional": true,
+            "name": "response"
+          }
+        ]
+      }
+    ]
+  }
+]