Enable EnterpriseEnrollmentTest.* tests

EnterpriseEnrollmentTest.TestAttributePromptPageGetsLoaded
EnterpriseEnrollmentTest.TestActiveDirectoryEnrollment_UIErrors

BUG=chromium:746723

Change-Id: If65f47d6193822c692d1a337621e94944153768d
Reviewed-on: https://chromium-review.googlesource.com/803315Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
Commit-Queue: Roman Sorokin <rsorokin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#521666}

chrome/browser/chromeos/login/enterprise_enrollment_browsertest.cc

@@ -302,9 +302,8 @@ IN_PROC_BROWSER_TEST_F(EnterpriseEnrollmentTest,
 // attribute prompt screen. Verifies the attribute prompt screen is displayed.
 // Verifies that the data the user enters into the attribute prompt screen is
 // received by the enrollment helper.
-// Crashes on ChromeOS: http://crbug.com/746723.
 IN_PROC_BROWSER_TEST_F(EnterpriseEnrollmentTest,
-                       DISABLED_TestAttributePromptPageGetsLoaded) {
+                       TestAttributePromptPageGetsLoaded) {
   ShowEnrollmentScreen();
   ExpectAttributePromptUpdate();
   SubmitEnrollmentCredentials();
@@ -355,9 +354,8 @@ IN_PROC_BROWSER_TEST_F(EnterpriseEnrollmentTest,
 // Directory domain join screen. Verifies the domain join screen is displayed.
 // Submits Active Directory different incorrect credentials. Verifies that the
 // correct error is displayed.
-// Crashes on ChromeOS: http://crbug.com/746723.
 IN_PROC_BROWSER_TEST_F(EnterpriseEnrollmentTest,
-                       DISABLED_TestActiveDirectoryEnrollment_UIErrors) {
+                       TestActiveDirectoryEnrollment_UIErrors) {
   ShowEnrollmentScreen();
   SetupActiveDirectoryJoin();
   SubmitEnrollmentCredentials();