Initialize ios/web_view translate with a system-wide URLRequestContext.

ios/web_view/internal/cwv_web_view_configuration.mm

Index: ios/web_view/internal/cwv_web_view_configuration.mm
diff --git a/ios/web_view/internal/cwv_web_view_configuration.mm b/ios/web_view/internal/cwv_web_view_configuration.mm
index bd677f49a2b86c7fd42172b5fcd52758f9a42243..70a72ead3816bcfce3eede3fa1ee88e2a52fe894 100644
--- a/ios/web_view/internal/cwv_web_view_configuration.mm
+++ b/ios/web_view/internal/cwv_web_view_configuration.mm
@@ -9,11 +9,11 @@
 #include "base/threading/thread_restrictions.h"
 #include "components/translate/core/browser/translate_download_manager.h"
 #include "ios/web/public/app/web_main.h"
+#include "ios/web_view/internal/app/application_context.h"
 #import "ios/web_view/internal/cwv_user_content_controller_internal.h"
 #import "ios/web_view/internal/web_view_browser_state.h"
 #import "ios/web_view/internal/web_view_web_client.h"
 #import "ios/web_view/internal/web_view_web_main_delegate.h"
-#include "ui/base/l10n/l10n_util_mac.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
@@ -60,6 +60,15 @@
     webMainDelegate = base::MakeUnique<ios_web_view::WebViewWebMainDelegate>();
     web::WebMainParams params(webMainDelegate.get());
     webMain = base::MakeUnique<web::WebMain>(params);
+
+    // Initialize translate.
+    translate::TranslateDownloadManager* downloadManager =
+        translate::TranslateDownloadManager::GetInstance();
+    downloadManager->set_request_context(
+        ios_web_view::GetApplicationContext()->GetSystemURLRequestContext());
+    downloadManager->set_application_locale(
+        ios_web_view::GetApplicationContext()->GetApplicationLocale());
+    downloadManager->language_list()->SetResourceRequestsAllowed(true);
   });
 }
 
@@ -69,15 +78,6 @@
   if (self) {
     _browserState = std::move(browserState);
 
-    // Initialize translate.
-    translate::TranslateDownloadManager* downloadManager =
-        translate::TranslateDownloadManager::GetInstance();
-    // TODO(crbug.com/710948): Use global request context here.
-    downloadManager->set_request_context(_browserState->GetRequestContext());
-    // TODO(crbug.com/679895): Bring up application locale correctly.
-    downloadManager->set_application_locale(l10n_util::GetLocaleOverride());
-    downloadManager->language_list()->SetResourceRequestsAllowed(true);
-
     _userContentController =
         [[CWVUserContentController alloc] initWithConfiguration:self];
   }