History: Add option to group visits by domain

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 9bc5ccfa1369ad694e9d49e7bc84770e8818a4a0..3b3ca8939766c485b53497255ffd12283e7142a2 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -723,11 +723,14 @@ const char kHelpShort[]                     = "h";
 // it.
 const char kHideIcons[]                     = "hide-icons";
 
+// Disables full history sync.
+const char kHistoryDisableFullHistorySync[]      = "disable-full-history-sync";
+
 // Enables full history sync (not just typed URLs) for signed-in users.
 const char kHistoryEnableFullHistorySync[]       = "enable-full-history-sync";
 
-// Disables full history sync.
-const char kHistoryDisableFullHistorySync[]      = "disable-full-history-sync";
+// Enables grouping websites by domain and filtering them by period.
+const char kHistoryEnableGrouped[]          = "enable-grouped-history";
 
 // Specifies which page will be displayed in newly-opened tabs. We need this
 // for testing purposes so that the UI tests don't depend on what comes up for