Open the launcher when hotword is triggered in always-on mode.

chrome/browser/ui/app_list/app_list_service_impl.h

Index: chrome/browser/ui/app_list/app_list_service_impl.h
diff --git a/chrome/browser/ui/app_list/app_list_service_impl.h b/chrome/browser/ui/app_list/app_list_service_impl.h
index 91c39e78fcae12abfc2d6028e2c09b26747b95cf..a4277d3e4c11f777f1ebb49547b13c9b604e697e 100644
--- a/chrome/browser/ui/app_list/app_list_service_impl.h
+++ b/chrome/browser/ui/app_list/app_list_service_impl.h
@@ -54,6 +54,7 @@ class AppListServiceImpl : public AppListService,
       const base::FilePath& user_data_dir) override;
   virtual void SetProfilePath(const base::FilePath& profile_path) override;
   virtual void Show() override;
+  virtual void ShowForVoiceSearch(Profile* profile) override;
   virtual void AutoShowForProfile(Profile* requested_profile) override;
   virtual void EnableAppList(Profile* initial_profile,
                              AppListEnableSource enable_source) override;