Converted policy_prefs_ui.py pyauto test to a browser_test.

chrome/test/functional/PYAUTO_TESTS

Index: chrome/test/functional/PYAUTO_TESTS
diff --git a/chrome/test/functional/PYAUTO_TESTS b/chrome/test/functional/PYAUTO_TESTS
index fa99daaaf94f7b5c3e144c4bc732f84446bfa8e6..f886a59547185068690f3f8ce3e0c93eab443b24 100644
--- a/chrome/test/functional/PYAUTO_TESTS
+++ b/chrome/test/functional/PYAUTO_TESTS
@@ -55,7 +55,6 @@
       'ntp',
       'omnibox',
       'passwords',
-      'policy_prefs_ui',
       'prefs',
       'prefs_ui',
       'pyauto_webdriver',
@@ -181,9 +180,6 @@
       '-omnibox.OmniboxTest.testContentHistory',
       # Keychain popups make autofill/password tests difficult: crbug.com/49378
       '-passwords',
-      # crbug.com/130094
-      '-policy_prefs_ui.PolicyPrefsUITest.testToggleUserPolicyTogglesBanner',
-      '-policy_prefs_ui.PolicyPrefsUITest.testUserPoliciesShowBanner',
       # crbug.com/69619
       '-search_engines.SearchEnginesTest.testDiscoverSearchEngine',
       # Keychain popups make sync tests difficult on Mac.  crbug.com/49378
@@ -276,9 +272,6 @@
       # Multi-profile doesn't apply to chromeos yet.
       '-multiprofile',
       '-ntp.NTPTest.testDifferentProfileNotAppearInMostVisited',
-      # This requires a custom setup on ChromeOS and has its own suite for
-      # that platform.
-      '-policy_prefs_ui',
       # You cannot adjust the downloads directory on ChromeOS.
       '-prefs.PrefsTest.testDownloadDirPref',
 
@@ -641,7 +634,6 @@
       'chromeos_device_policy',
       'chromeos_onc',
       'chromeos_retail_mode',
-      'policy_prefs_ui',
     ],
   },
 
@@ -749,9 +741,6 @@
       '-youtube.YoutubeTest.testPlayerStatus',
       '-ntp.NTPTest.testLaunchAppFullScreen',
       '-media.media_basic_playback.MediaConstrainedNetworkPerfTest.testBasicPlaybackMatrix',
-      '-policy_prefs_ui.PolicyPrefsUITest.testNoUserPoliciesNoBanner',
-      '-policy_prefs_ui.PolicyPrefsUITest.testToggleUserPolicyTogglesBanner',
-      '-policy_prefs_ui.PolicyPrefsUITest.testUserPoliciesShowBanner',
       '-search_engines.SearchEnginesTest.testDiscoverSearchEngine',
       '-ntp.NTPTest.testUninstallApp',
       '-ntp.NTPTest.testLaunchAppWithDefaultSettings',