Exclude building signin view controller and its delegate on ChromeOS

chrome/browser/ui/webui/signin/signin_utils.cc

Index: chrome/browser/ui/webui/signin/signin_utils.cc
diff --git a/chrome/browser/ui/webui/signin/signin_utils.cc b/chrome/browser/ui/webui/signin/signin_utils.cc
index 953bdb5a8563e27038eb61122ce4153a42578919..75f44599cf282bffe5e1bed30548fe016b71250c 100644
--- a/chrome/browser/ui/webui/signin/signin_utils.cc
+++ b/chrome/browser/ui/webui/signin/signin_utils.cc
@@ -67,6 +67,9 @@ Browser* GetDesktopBrowser(content::WebUI* web_ui) {
 
 void SetInitializedModalHeight(content::WebUI* web_ui,
                                const base::ListValue* args) {
+#if defined(OS_CHROMEOS)
+  NOTREACHED();
+#else
   double height;
   const bool success = args->GetDouble(0, &height);
   DCHECK(success);
@@ -76,6 +79,7 @@ void SetInitializedModalHeight(content::WebUI* web_ui,
     browser->signin_view_controller()->SetModalSigninHeight(
         static_cast<int>(height));
   }
+#endif
 }
 
 bool IsForceSigninEnabled() {