[Cronet] Add an error for missing request finished info executor.

To disambiguate missing a RequestFinishedInfoListener vs. missing the
general UrlRequest executor, add a new error type.

Bug: 879208
Change-Id: I71b15ebf520fbb53b91a03721ea7291f4b50a435
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1559705
Commit-Queue: Caleb Raitto <caraitto@chromium.org>
Reviewed-by: Misha Efimov <mef@chromium.org>
Reviewed-by: Paul Jensen <pauljensen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#650468}

components/cronet/native/cronet.idl

@@ -317,6 +317,10 @@ enum RESULT {
    * Params is required
    */
   NULL_POINTER_PARAMS = -311,
+  /**
+   * Executor for RequestFinishedInfoListener is required
+   */
+  NULL_POINTER_REQUEST_FINISHED_INFO_LISTENER_EXECUTOR = -312,
 };
 
 /**

components/cronet/native/generated/cronet.idl_c.h

@@ -99,6 +99,7 @@ typedef enum Cronet_RESULT {
   Cronet_RESULT_NULL_POINTER_HEADER_NAME = -309,
   Cronet_RESULT_NULL_POINTER_HEADER_VALUE = -310,
   Cronet_RESULT_NULL_POINTER_PARAMS = -311,
+  Cronet_RESULT_NULL_POINTER_REQUEST_FINISHED_INFO_LISTENER_EXECUTOR = -312,
 } Cronet_RESULT;
 
 typedef enum Cronet_Error_ERROR_CODE {