[PhysicalWeb] Add physical_web namespace.

chrome/browser/autocomplete/chrome_autocomplete_provider_client.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/autocomplete/chrome_autocomplete_provider_client.h"
 
 #include <stddef.h>
 
 #include "base/feature_list.h"
 #include "base/macros.h"
@@ skipping 133 matching lines @@
 ChromeAutocompleteProviderClient::GetKeywordExtensionsDelegate(
     KeywordProvider* keyword_provider) {
 #if BUILDFLAG(ENABLE_EXTENSIONS)
   return base::MakeUnique<KeywordExtensionsDelegateImpl>(profile_,
                                                          keyword_provider);
 #else
   return nullptr;
 #endif
 }
 
-PhysicalWebDataSource*
+physical_web::PhysicalWebDataSource*
 ChromeAutocompleteProviderClient::GetPhysicalWebDataSource() {
   return nullptr;
 }
 
 std::string ChromeAutocompleteProviderClient::GetAcceptLanguages() const {
   return profile_->GetPrefs()->GetString(prefs::kAcceptLanguages);
 }
 
 std::string
 ChromeAutocompleteProviderClient::GetEmbedderRepresentationOfAboutScheme() {
@@ skipping 85 matching lines @@
   image_service->Prefetch(url);
 }
 
 void ChromeAutocompleteProviderClient::OnAutocompleteControllerResultReady(
     AutocompleteController* controller) {
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_AUTOCOMPLETE_CONTROLLER_RESULT_READY,
       content::Source<AutocompleteController>(controller),
       content::NotificationService::NoDetails());
 }