History: Add range navigation control for grouped visits

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 66eb4dfc6e79d5c5917ab890a97239d8ff80ef28..5b62009f0c18ddf6588c1b0e89e3ff8c209f2639 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -474,6 +474,9 @@ Psst! Incognito mode <ph name="SHORTCUT_KEY">$1<ex>(Ctrl+Shift+N)</ex></ph> may
       <message name="IDS_HISTORY_RANGE_MONTH" desc="Option in the history range combo box. Sets the range to month.">
         calendar month
       </message>
+      <message name="IDS_HISTORY_RANGE_TODAY" desc="The text on the button that sets the current time range back to today.">
+        Today
+      </message>
       <message name="IDS_HISTORY_NUMBER_VISITS" desc="Format string for the number of visits of a site.">
         (<ph name="NUMBER_VISITS">$1</ph>)
       </message>