[Cleanup] Move include into existing ifdef

Change-Id: I15ff2424bbc5773eae3bbfe847a83d574eceb066
Reviewed-on: https://chromium-review.googlesource.com/1093014Reviewed-by: Bernhard Bauer <bauerb@chromium.org>
Commit-Queue: Kyle Milka <kmilka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#565648}

chrome/browser/prefs/browser_prefs.cc

@@ -191,6 +191,7 @@
 #include "chrome/browser/gcm/gcm_product_util.h"
 #include "chrome/browser/media/router/media_router_feature.h"
 #include "chrome/browser/metrics/tab_stats_tracker.h"
+#include "chrome/browser/search/instant_service.h"
 #include "chrome/browser/signin/signin_promo.h"
 #include "chrome/browser/ui/startup/startup_browser_creator.h"
 #include "chrome/browser/ui/webui/foreign_session_handler.h"
@@ -287,10 +288,6 @@
 #include "chrome/browser/ui/desktop_ios_promotion/desktop_ios_promotion_util.h"
 #endif
 
-#if !defined(OS_ANDROID)
-#include "chrome/browser/search/instant_service.h"
-#endif
-
 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
 #include "chrome/browser/ui/startup/default_browser_prompt.h"
 #endif