Add a Physical Web data source

ios/chrome/browser/application_context_impl.cc

Index: ios/chrome/browser/application_context_impl.cc
diff --git a/ios/chrome/browser/application_context_impl.cc b/ios/chrome/browser/application_context_impl.cc
index 4f7ace27c42356a3cf80bf31b99e06da561a19dd..a8b991b6db3b3cf4610b3b39bffd01fa600409aa 100644
--- a/ios/chrome/browser/application_context_impl.cc
+++ b/ios/chrome/browser/application_context_impl.cc
@@ -28,6 +28,7 @@
 #include "components/metrics_services_manager/metrics_services_manager.h"
 #include "components/net_log/chrome_net_log.h"
 #include "components/network_time/network_time_tracker.h"
+#include "components/physical_web/data_source/physical_web_data_source.h"
 #include "components/prefs/pref_registry_simple.h"
 #include "components/prefs/pref_service.h"
 #include "components/translate/core/browser/translate_download_manager.h"
@@ -43,6 +44,7 @@
 #include "ios/chrome/browser/ios_chrome_io_thread.h"
 #include "ios/chrome/browser/metrics/ios_chrome_metrics_services_manager_client.h"
 #include "ios/chrome/browser/net/crl_set_fetcher.h"
+#include "ios/chrome/browser/physical_web/create_physical_web_data_source.h"
 #include "ios/chrome/browser/pref_names.h"
 #include "ios/chrome/browser/prefs/browser_prefs.h"
 #include "ios/chrome/browser/prefs/ios_chrome_pref_service_factory.h"
@@ -297,6 +299,15 @@ CRLSetFetcher* ApplicationContextImpl::GetCRLSetFetcher() {
   return crl_set_fetcher_.get();
 }
 
+PhysicalWebDataSource* ApplicationContextImpl::GetPhysicalWebDataSource() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  if (!physical_web_data_source_) {
+    physical_web_data_source_ = CreateIOSChromePhysicalWebDataSource();
+    DCHECK(physical_web_data_source_);
+  }
+  return physical_web_data_source_.get();
+}
+
 void ApplicationContextImpl::SetApplicationLocale(const std::string& locale) {
   DCHECK(thread_checker_.CalledOnValidThread());
   application_locale_ = locale;