Always load signin profile on Chrome OS startup.

chrome/browser/safe_browsing/safe_browsing_service_browsertest.cc

Index: chrome/browser/safe_browsing/safe_browsing_service_browsertest.cc
diff --git a/chrome/browser/safe_browsing/safe_browsing_service_browsertest.cc b/chrome/browser/safe_browsing/safe_browsing_service_browsertest.cc
index f5983269fdd2789b5fa01cf74e3dc2609835859e..b094ea7343a090976b6da1ac6112bfc2a7f65db4 100644
--- a/chrome/browser/safe_browsing/safe_browsing_service_browsertest.cc
+++ b/chrome/browser/safe_browsing/safe_browsing_service_browsertest.cc
@@ -48,6 +48,7 @@
 #include "testing/gmock/include/gmock/gmock.h"
 
 #if defined(OS_CHROMEOS)
+#include "chrome/browser/chromeos/profiles/profile_helper.h"
 #include "chromeos/chromeos_switches.h"
 #endif
 
@@ -1028,6 +1029,18 @@ IN_PROC_BROWSER_TEST_F(SafeBrowsingServiceTest, StartAndStop) {
   // Change the other pref. SBS should stop now.
   pref_service2->SetBoolean(prefs::kSafeBrowsingEnabled, false);
   WaitForIOThread();
+
+  // TODO(mattm): Remove this when crbug.com/461493 is fixed.
+#if defined(OS_CHROMEOS)
+  // On Chrome OS we should disable safe browsing for signin profile.
+  EXPECT_TRUE(sb_service->enabled());
+  EXPECT_TRUE(csd_service->enabled());
+  chromeos::ProfileHelper::GetSigninProfile()
+      ->GetOriginalProfile()
+      ->GetPrefs()
+      ->SetBoolean(prefs::kSafeBrowsingEnabled, false);
+  WaitForIOThread();
+#endif
   EXPECT_FALSE(sb_service->enabled());
   EXPECT_FALSE(csd_service->enabled());