test: move some BrowserWindow specs to the main runner (#18551)

docs/api/web-contents.md

@@ -70,10 +70,24 @@ Returns:
 * `frameProcessId` Integer
 * `frameRoutingId` Integer
 
-This event is like `did-finish-load` but emitted when the load failed or was
-cancelled, e.g. `window.stop()` is invoked.
+This event is like `did-finish-load` but emitted when the load failed.
 The full list of error codes and their meaning is available [here](https://code.google.com/p/chromium/codesearch#chromium/src/net/base/net_error_list.h).
 
+#### Event: 'did-fail-provisional-load'
+
+Returns:
+
+* `event` Event
+* `errorCode` Integer
+* `errorDescription` String
+* `validatedURL` String
+* `isMainFrame` Boolean
+* `frameProcessId` Integer
+* `frameRoutingId` Integer
+
+This event is like `did-fail-load` but emitted when the load was cancelled
+(e.g. `window.stop()` was invoked).
+
 #### Event: 'did-frame-finish-load'
 
 Returns:

docs/api/web-request.md

@@ -82,11 +82,11 @@ The `callback` has to be called with an `response` object.
     * `resourceType` String
     * `referrer` String
     * `timestamp` Double
-    * `requestHeaders` Object
+    * `requestHeaders` Record<string, string>
   * `callback` Function
     * `response` Object
       * `cancel` Boolean (optional)
-      * `requestHeaders` Object (optional) - When provided, request will be made
+      * `requestHeaders` Record<string, string> (optional) - When provided, request will be made
   with these headers.
 
 The `listener` will be called with `listener(details, callback)` before sending
@@ -109,7 +109,7 @@ The `callback` has to be called with an `response` object.
     * `resourceType` String
     * `referrer` String
     * `timestamp` Double
-    * `requestHeaders` Object
+    * `requestHeaders` Record<string, string>
 
 The `listener` will be called with `listener(details)` just before a request is
 going to be sent to the server, modifications of previous `onBeforeSendHeaders`