Fine tuned availability of hotword plugin.

chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.cc

Index: chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.cc
diff --git a/chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.cc b/chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.cc
index 4f35567fb31880330d7131241de1cc041b2e32ae..c62bef01d2dc97dcf1f280322c5f9af876c9e264 100644
--- a/chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.cc
+++ b/chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.cc
@@ -166,6 +166,10 @@
 #include "chrome/browser/profile_resetter/automatic_profile_resetter_factory.h"
 #endif
 
+#if defined(ENABLE_APP_LIST)
+#include "chrome/browser/ui/app_list/start_page_service_factory.h"
+#endif
+
 #if defined(ENABLE_SPELLCHECK)
 #include "chrome/browser/extensions/api/spellcheck/spellcheck_api.h"
 #include "chrome/browser/spellchecker/spellcheck_factory.h"
@@ -203,6 +207,9 @@ ChromeBrowserMainExtraPartsProfiles::~ChromeBrowserMainExtraPartsProfiles() {
 void ChromeBrowserMainExtraPartsProfiles::
 EnsureBrowserContextKeyedServiceFactoriesBuilt() {
   AboutSigninInternalsFactory::GetInstance();
+#if defined(ENABLE_APP_LIST)
+  app_list::StartPageServiceFactory::GetInstance();
+#endif
   autofill::PersonalDataManagerFactory::GetInstance();
 #if !defined(OS_ANDROID)
   AutomaticProfileResetterFactory::GetInstance();