Prepare for building with enable_app_list=0 on Desktop

chrome/browser/prefs/browser_prefs.cc

Index: chrome/browser/prefs/browser_prefs.cc
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index 8f42150c14cb10fbdedc544e029dab66628fb3e6..6af2514dc8400e2710522d8660a74a3d8d30076f 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -109,7 +109,6 @@
 
 #if defined(ENABLE_EXTENSIONS)
 #include "chrome/browser/accessibility/animation_policy_prefs.h"
-#include "chrome/browser/apps/drive/drive_app_mapping.h"
 #include "chrome/browser/apps/shortcut_manager.h"
 #include "chrome/browser/extensions/activity_log/activity_log.h"
 #include "chrome/browser/extensions/api/commands/command_service.h"
@@ -230,6 +229,10 @@
 #include "chrome/browser/ui/startup/default_browser_prompt.h"
 #endif
 
+#if defined(ENABLE_APP_LIST)
+#include "chrome/browser/apps/drive/drive_app_mapping.h"
+#endif
+
 namespace {
 
 #if defined(OS_WIN)
@@ -517,7 +520,9 @@ void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
   AppShortcutManager::RegisterProfilePrefs(registry);
   DeviceIDFetcher::RegisterProfilePrefs(registry);
   DevToolsWindow::RegisterProfilePrefs(registry);
+#if defined(ENABLE_APP_LIST)
   DriveAppMapping::RegisterProfilePrefs(registry);
+#endif
   extensions::CommandService::RegisterProfilePrefs(registry);
   extensions::ExtensionSettingsHandler::RegisterProfilePrefs(registry);
   extensions::TabsCaptureVisibleTabFunction::RegisterProfilePrefs(registry);