Updates language model on iOS.

ios/web_view/internal/translate/web_view_translate_client.mm

Index: ios/web_view/internal/translate/web_view_translate_client.mm
diff --git a/ios/web_view/internal/translate/web_view_translate_client.mm b/ios/web_view/internal/translate/web_view_translate_client.mm
index 20af563706b74532e3d5ca8c4c7adb1d6d251080..7302b55f6d6093be48c78f783b3e470bd8afc206 100644
--- a/ios/web_view/internal/translate/web_view_translate_client.mm
+++ b/ios/web_view/internal/translate/web_view_translate_client.mm
@@ -34,6 +34,8 @@ DEFINE_WEB_STATE_USER_DATA_KEY(ios_web_view::WebViewTranslateClient);
 
 namespace ios_web_view {
 
+// TODO(ramyasharma): Investigate if language_model needs to be passed here

[rohitrao (ping after 24h), 2017/06/05 13:37:43]

Please file a bug for this and use TODO(crbug.com/NNNNNN).  That will help make
sure we don't forget to follow up.

[michaeldo, 2017/06/05 15:03:43]

Agreed, we always use bug number references in ios/ to ensure we don't lose
track of TODOs.

Please add the "Mobile>iOSWebView" component to the bug you create.

[ramyasharma, 2017/06/06 04:22:27]

Done.

[ramyasharma, 2017/06/06 04:22:27]

Done.

+// so that the language model histogram is updated from webview.
 WebViewTranslateClient::WebViewTranslateClient(web::WebState* web_state)
     : web::WebStateObserver(web_state),
       translate_manager_(base::MakeUnique<translate::TranslateManager>(
@@ -44,7 +46,8 @@ WebViewTranslateClient::WebViewTranslateClient(web::WebState* web_state)
           prefs::kAcceptLanguages)),
       translate_driver_(web_state,
                         web_state->GetNavigationManager(),
-                        translate_manager_.get()) {}
+                        translate_manager_.get(),
+                        nil /*language_model*/) {}
 
 WebViewTranslateClient::~WebViewTranslateClient() = default;