Rollback feature is taken out of the flag.

chrome/browser/chromeos/login/reset_browsertest.cc

Index: chrome/browser/chromeos/login/reset_browsertest.cc
diff --git a/chrome/browser/chromeos/login/reset_browsertest.cc b/chrome/browser/chromeos/login/reset_browsertest.cc
index 35fce66ce3f504614920cfcb2f2bca981a506a7a..3625289401c75dc180d5da594fe9acd318f25b79 100644
--- a/chrome/browser/chromeos/login/reset_browsertest.cc
+++ b/chrome/browser/chromeos/login/reset_browsertest.cc
@@ -40,7 +40,6 @@ class ResetTest : public LoginManagerTest {
 
   virtual void SetUpCommandLine(base::CommandLine* command_line) override {
     LoginManagerTest::SetUpCommandLine(command_line);
-    command_line->AppendSwitch(switches::kEnableRollbackOption);
   }
 
   // LoginManagerTest overrides:
@@ -105,7 +104,6 @@ class ResetFirstAfterBootTest : public ResetTest {
   virtual void SetUpCommandLine(base::CommandLine* command_line) override {
     LoginManagerTest::SetUpCommandLine(command_line);
     command_line->AppendSwitch(switches::kFirstExecAfterBoot);
-    command_line->AppendSwitch(switches::kEnableRollbackOption);
   }
 };