feat: [routing] adds support for specifying region_code in the Comput…

…eRoutesRequest (#4103)

* feat: adds support for specifying region_code in the ComputeRoutesRequest
feat: adds support for specifying region_code and language_code in the ComputeRouteMatrixRequest

PiperOrigin-RevId: 517493769

Source-Link: googleapis/googleapis@8fa8ae4

Source-Link: googleapis/googleapis-gen@45fd970
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Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

packages/google-maps-routing/protos/google/maps/routing/v2/routes_service.proto

@@ -211,6 +211,11 @@ message ComputeRoutesRequest {
   // display language is inferred from the location of the route request.
   string language_code = 10 [(google.api.field_behavior) = OPTIONAL];
 
+  // Optional. The region code, specified as a ccTLD ("top-level domain")
+  // two-character value. For more information see
+  // https://en.wikipedia.org/wiki/List_of_Internet_top-level_domains#Country_code_top-level_domains
+  string region_code = 16 [(google.api.field_behavior) = OPTIONAL];
+
   // Optional. Specifies the units of measure for the display fields. This
   // includes the `instruction` field in `NavigationInstruction`. The units of
   // measure used for the route, leg, step distance, and duration are not
@@ -299,6 +304,19 @@ message ComputeRouteMatrixRequest {
   google.protobuf.Timestamp departure_time = 5
       [(google.api.field_behavior) = OPTIONAL];
 
+  // Optional. The BCP-47 language code, such as "en-US" or "sr-Latn". For more
+  // information, see
+  // http://www.unicode.org/reports/tr35/#Unicode_locale_identifier. See
+  // [Language Support](https://developers.google.com/maps/faq#languagesupport)
+  // for the list of supported languages. When you don't provide this value, the
+  // display language is inferred from the location of the first origin.
+  string language_code = 6 [(google.api.field_behavior) = OPTIONAL];
+
+  // Optional. The region code, specified as a ccTLD ("top-level domain")
+  // two-character value. For more information see
+  // https://en.wikipedia.org/wiki/List_of_Internet_top-level_domains#Country_code_top-level_domains
+  string region_code = 9 [(google.api.field_behavior) = OPTIONAL];
+
   // Optional. A list of extra computations which may be used to complete the
   // request. Note: These extra computations may return extra fields on the
   // response. These extra fields must also be specified in the field mask to be

packages/google-maps-routing/samples/generated/v2/routes.compute_route_matrix.js

@@ -63,6 +63,21 @@ function main(origins, destinations) {
    *  has already occurred, the request fails.
    */
   // const departureTime = {}
+  /**
+   *  Optional. The BCP-47 language code, such as "en-US" or "sr-Latn". For more
+   *  information, see
+   *  http://www.unicode.org/reports/tr35/#Unicode_locale_identifier. See
+   *  Language Support (https://developers.google.com/maps/faq#languagesupport)
+   *  for the list of supported languages. When you don't provide this value, the
+   *  display language is inferred from the location of the first origin.
+   */
+  // const languageCode = 'abc123'
+  /**
+   *  Optional. The region code, specified as a ccTLD ("top-level domain")
+   *  two-character value. For more information see
+   *  https://en.wikipedia.org/wiki/List_of_Internet_top-level_domains#Country_code_top-level_domains
+   */
+  // const regionCode = 'abc123'
   /**
    *  Optional. A list of extra computations which may be used to complete the
    *  request. Note: These extra computations may return extra fields on the