[EoC] Set language_code instead of spoken_language

Bug:833964

Change-Id: Ia365a3fa7aba1bedd57d38ff392a5663cd0d15c7
Reviewed-on: https://chromium-review.googlesource.com/1043086Reviewed-by: Filip Gorski <fgorski@chromium.org>
Commit-Queue: Patrick Noland <pnoland@chromium.org>
Cr-Commit-Position: refs/heads/master@{#555903}

components/ntp_snippets/contextual/contextual_suggestions_fetch.cc

@@ -117,7 +117,7 @@ const std::string SerializedPivotsRequest(const std::string& url,
   GetPivotsRequest pivot_request;
 
   SearchApiRequestContext* search_context = pivot_request.mutable_context();
-  search_context->mutable_localization_context()->set_spoken_language(
+  search_context->mutable_localization_context()->set_language_code(
       bcp_language);
 
   GetPivotsQuery* query = pivot_request.mutable_query();

components/ntp_snippets/contextual/contextual_suggestions_fetcher_impl_unittest.cc

@@ -402,7 +402,7 @@ TEST_F(ContextualSuggestionsFetcherTest, RequestHeaderSetCorrectly) {
   GetPivotsRequest request;
   ASSERT_TRUE(request.ParseFromString(decoded_header_value));
 
-  EXPECT_EQ(request.context().localization_context().spoken_language(), "en");
+  EXPECT_EQ(request.context().localization_context().language_code(), "en");
   EXPECT_EQ(request.query().context()[0].url(), "http://www.article.com/");
   EXPECT_TRUE(request.query().document_params().enabled());
   EXPECT_EQ(request.query().document_params().num(), 10);