[ios] Implements RLZTrackerDelegateImpl::GetURLLoaderFactory().

BUG=873972

Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: Ic81c197c96e812e967958ff03aff6c55dc2bd119
Reviewed-on: https://chromium-review.googlesource.com/1174941Reviewed-by: Antonio Gomes <tonikitoo@igalia.com>
Reviewed-by: Maks Orlovich <morlovich@chromium.org>
Reviewed-by: Peter Lee <pkl@chromium.org>
Commit-Queue: Peter Lee <pkl@chromium.org>
Cr-Commit-Position: refs/heads/master@{#583037}

ios/chrome/browser/rlz/BUILD.gn

@@ -17,5 +17,6 @@ source_set("rlz") {
     "//ios/chrome/browser/google",
     "//ios/chrome/browser/search_engines",
     "//ios/web",
+    "//services/network/public/cpp",
   ]
 }

ios/chrome/browser/rlz/rlz_tracker_delegate_impl.cc

@@ -15,6 +15,7 @@
 #include "ios/chrome/browser/google/google_brand.h"
 #include "ios/chrome/browser/search_engines/template_url_service_factory.h"
 #include "ios/web/public/web_thread.h"
+#include "services/network/public/cpp/shared_url_loader_factory.h"
 
 RLZTrackerDelegateImpl::RLZTrackerDelegateImpl() {}
 
@@ -58,8 +59,9 @@ bool RLZTrackerDelegateImpl::IsOnUIThread() {
   return web::WebThread::CurrentlyOn(web::WebThread::UI);
 }
 
-net::URLRequestContextGetter* RLZTrackerDelegateImpl::GetRequestContext() {
-  return GetApplicationContext()->GetSystemURLRequestContext();
+scoped_refptr<network::SharedURLLoaderFactory>
+RLZTrackerDelegateImpl::GetURLLoaderFactory() {
+  return GetApplicationContext()->GetSharedURLLoaderFactory();
 }
 
 bool RLZTrackerDelegateImpl::GetBrand(std::string* brand) {

ios/chrome/browser/rlz/rlz_tracker_delegate_impl.h

@@ -33,7 +33,7 @@ class RLZTrackerDelegateImpl : public rlz::RLZTrackerDelegate {
   // RLZTrackerDelegate implementation.
   void Cleanup() override;
   bool IsOnUIThread() override;
-  net::URLRequestContextGetter* GetRequestContext() override;
+  scoped_refptr<network::SharedURLLoaderFactory> GetURLLoaderFactory() override;
   bool GetBrand(std::string* brand) override;
   bool IsBrandOrganic(const std::string& brand) override;
   bool GetReactivationBrand(std::string* brand) override;