Added new adaptive "Suggest" tab on the New Tab Page, behing the flag, for the experiments.

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index 9ae5be1331c80367aec4bed6e0ad50864c3106dd..e5600abb9c6900bc4e36660804908137764fe4bc 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -549,6 +549,9 @@ const char kEnableRestoreSessionState[]   = "enable-restore-session-state";
 // supported server-side for searches on google.com.
 const char kEnableSdch[]                    = "enable-sdch";
 
+// Enables suggested new tab page for internal experiments.
+const char kEnableSuggestedTabPage[]        = "enable-suggested-ntp";
+
 // Enables syncing extension settings.
 const char kEnableSyncExtensionSettings[]   = "enable-sync-extension-settings";