Modify registry and json files to add policies for testing popups.

enterprise/chrome.json

 {
   "_comment": "This file is for enterprise testing in Linux.",
   "_comment": "Test that use this file: enterprise.py.",
   "AlternateErrorPagesEnabled": true,
   "AlwaysAuthorizePlugins": true,
   "AuthNegotiateDelegateWhitelist": "foobar.example.com",
   "AuthSchemes": "basic,digest,ntlm,negotiate",
   "AuthServerWhitelist": "*example.com,foobar.com,*baz",
   "AutoFillEnabled": false,
   "BlockThirdPartyCookies": true,
   "ClearSiteDataOnExit": true,
   "CookiesAllowedForUrls": ["http://www.example.com", "[*.]example.edu"],
   "CookiesBlockedForUrls": ["http://www.example.com", "[*.]example.edu"],
   "CookiesSessionOnlyForUrls": ["http://www.example.com", "[*.]example.edu"],
   "DefaultBrowserSettingEnabled": true,
   "DefaultCookiesSetting": 0,
   "DefaultGeolocationSetting": 0,
   "DefaultImagesSetting": 0,
   "DefaultJavaScriptSetting": 0,
   "DefaultNotificationSetting": 2,
   "DefaultPluginsSetting": 0,
-  "DefaultPopupsSetting": 1,
+  "DefaultPopupsSetting": 2,
   "DefaultSearchProviderEnabled": true,
   "DefaultSearchProviderEncodings": ["UTF-8", "UTF-16", "GB2312", "ISO-8859-1"],
   "DefaultSearchProviderIconURL": "http://search.my.company/favicon.ico",
   "DefaultSearchProviderInstantURL": "http://search.my.company/suggest?q={searchTerms}",
   "DefaultSearchProviderKeyword": "mis",
   "DefaultSearchProviderName": "My Intranet Search",
   "DefaultSearchProviderSearchURL": "http://search.my.company/search?q={searchTerms}",
   "DefaultSearchProviderSuggestURL": "http://search.my.company/suggest?q={searchTerms}",
   "DeveloperToolsDisabled": true,
   "Disable3DAPIs": false,
   "DisableAuthNegotiateCnameLookup": false,
   "DisableSpdy": true,
   "DisabledPlugins": ["Shockwave Flash", "Chrome PDF Viewer"],
   "DisabledPluginsExceptions": ["Chrome PDF Viewer"],
   "DnsPrefetchingEnabled": true,
   "DownloadDirectory": "Downloads",
   "EnableAuthNegotiatePort": false,
   "EnabledPlugins": ["Java"],
   "ExtensionInstallBlacklist": ["extension_id1", "extension_id2"],
-  "ExtensionInstallForcelist": ["lcncmkcnkcdbbanbjakcencbaoegdjlp;https://clients2.google.com/service/update2/crx"],
+  "ExtensionInstallForcelist": ["extension_id1;https://clients2.google.com/service/update2/crx"],
   "ExtensionInstallWhitelist": ["extension_id1", "extension_id2"],
   "GSSAPILibraryName": "libgssapi_krb5.so.2",
   "HomepageIsNewTabPage": true,
   "HomepageLocation": "http://chromium.org",
   "ImagesAllowedForUrls": ["http://www.example.com", "[*.]example.edu"],
   "ImagesBlockedForUrls": ["http://www.example.com", "[*.]example.edu"],
   "IncognitoEnabled": true,
   "InstantEnabled": true,
   "JavaScriptAllowedForUrls": ["http://www.example.com", "[*.]example.edu"],
   "JavaScriptBlockedForUrls": ["http://www.example.com", "[*.]example.edu"],
@@ skipping 12 matching lines @@
   "ProxyServer": "123.123.123.123:8080",
   "RestoreOnStartup": 4,
   "RestoreOnStartupURLs": ["http://chromium.org"],
   "SafeBrowsingEnabled": true,
   "SavingBrowserHistoryDisabled": true,
   "SearchSuggestEnabled": true,
   "ShowHomeButton": true,
   "SyncDisabled": true,
   "TranslateEnabled": true
 }