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 3c36aa494e349712532e275eb22e4c9bd53da136..3c7ed776d391b252f91eaf30a05649a99e0e339f 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -567,6 +567,9 @@ const char kEnableProfiling[]               = "enable-profiling";
 // supported server-side for searches on google.com.
 const char kEnableSdch[]                    = "enable-sdch";
 
+// Enables experimental suggestions pane in New Tab page.
+const char kEnableSuggestionsTabPage[]      = "enable-suggestions-ntp";
+
 // Enables syncing browser sessions.
 const char kEnableSyncTabs[]                = "enable-sync-tabs";