Move enable extensions define to a build flag.

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 14 matching lines @@
 #include "chrome/browser/sync/profile_sync_service_factory.h"
 #include "chrome/common/chrome_features.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "components/browser_sync/profile_sync_service.h"
 #include "components/history/core/browser/history_service.h"
 #include "components/omnibox/browser/autocomplete_classifier.h"
 #include "components/prefs/pref_service.h"
 #include "components/sync/driver/sync_service_utils.h"
 #include "content/public/browser/notification_service.h"
+#include "extensions/features/features.h"
 
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
 #include "chrome/browser/autocomplete/keyword_extensions_delegate_impl.h"
 #endif
 
 #if !defined(OS_ANDROID)
 namespace {
 
 // This list should be kept in sync with chrome/common/url_constants.h.
 // Only include useful sub-pages, confirmation alerts are not useful.
 const char* const kChromeSettingsSubPages[] = {
     chrome::kAutofillSubPage,
@@ skipping 88 matching lines @@
 }
 
 scoped_refptr<ShortcutsBackend>
 ChromeAutocompleteProviderClient::GetShortcutsBackendIfExists() {
   return ShortcutsBackendFactory::GetForProfileIfExists(profile_);
 }
 
 std::unique_ptr<KeywordExtensionsDelegate>
 ChromeAutocompleteProviderClient::GetKeywordExtensionsDelegate(
     KeywordProvider* keyword_provider) {
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
   return base::MakeUnique<KeywordExtensionsDelegateImpl>(profile_,
                                                          keyword_provider);
 #else
   return nullptr;
 #endif
 }
 
 PhysicalWebDataSource*
 ChromeAutocompleteProviderClient::GetPhysicalWebDataSource() {
   return nullptr;
@@ skipping 93 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());
 }