Cleanup: Only include background_mode_manager.h when ENABLE_BACKGROUND is defined.

chrome/browser/profiles/profile_impl.cc

Index: chrome/browser/profiles/profile_impl.cc
diff --git a/chrome/browser/profiles/profile_impl.cc b/chrome/browser/profiles/profile_impl.cc
index 8ddd09e27d5235f0175fd6ef80bf2c61a1eb2cc0..39835fd3a23639c55176664bbb1a04c63ad06bc3 100644
--- a/chrome/browser/profiles/profile_impl.cc
+++ b/chrome/browser/profiles/profile_impl.cc
@@ -28,7 +28,6 @@
 #include "chrome/browser/autocomplete/autocomplete_classifier.h"
 #include "chrome/browser/autocomplete/shortcuts_backend.h"
 #include "chrome/browser/background/background_contents_service_factory.h"
-#include "chrome/browser/background/background_mode_manager.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ -117,6 +116,10 @@
 #include "components/user_manager/user_manager.h"
 #endif
 
+#if defined(ENABLE_BACKGROUND)
+#include "chrome/browser/background/background_mode_manager.h"
+#endif
+
 #if defined(ENABLE_CONFIGURATION_POLICY)
 #include "chrome/browser/policy/schema_registry_service.h"
 #include "chrome/browser/policy/schema_registry_service_factory.h"
@@ -574,6 +577,7 @@ void ProfileImpl::DoFinalInit() {
   ssl_config_service_manager_.reset(
       SSLConfigServiceManager::CreateDefaultManager(local_state));
 
+#if defined(ENABLE_BACKGROUND)
   // Initialize the BackgroundModeManager - this has to be done here before
   // InitExtensions() is called because it relies on receiving notifications
   // when extensions are loaded. BackgroundModeManager is not needed under
@@ -588,6 +592,7 @@ void ProfileImpl::DoFinalInit() {
     if (g_browser_process->background_mode_manager())
       g_browser_process->background_mode_manager()->RegisterProfile(this);
   }
+#endif  // defined(ENABLE_BACKGROUND)
 
   base::FilePath cookie_path = GetPath();
   cookie_path = cookie_path.Append(chrome::kCookieFilename);