[New Tab Page] Add Field Trial support to the Local NTP

chrome/common/chrome_switches.h

Index: chrome/common/chrome_switches.h
diff --git a/chrome/common/chrome_switches.h b/chrome/common/chrome_switches.h
index 5eb6e176e479d84f739d0e0d6c7bac1a170dc152..af892982d7fc4aac3cf40d6f1104cdd79dfad2c0 100644
--- a/chrome/common/chrome_switches.h
+++ b/chrome/common/chrome_switches.h
@@ -86,6 +86,7 @@ extern const char kDisableExtensionsHttpThrottling[];
 extern const char kDisableExtensions[];
 extern const char kDisableIPv6[];
 extern const char kDisableMinimizeOnSecondLauncherItemClick[];
+extern const char kDisableNewNTPDesign[];
 extern const char kDisableNTPOtherSessionsMenu[];
 extern const char kDisableOfflineAutoReload[];
 extern const char kDisableOfflineAutoReloadVisibleOnly[];
@@ -146,6 +147,7 @@ extern const char kEnableIPv6[];
 extern const char kEnableLinkableEphemeralApps[];
 extern const char kEnableNaCl[];
 extern const char kEnableNetBenchmarking[];
+extern const char kEnableNewNTPDesign[];
 extern const char kEnableNpnHttpOnly[];
 extern const char kEnableOfflineAutoReload[];
 extern const char kEnableOfflineAutoReloadVisibleOnly[];