Revert 114083 - Convert app_launch_index and page_index from int to StringOrdinal.

chrome/common/string_ordinal.cc

Index: chrome/common/string_ordinal.cc
===================================================================
--- chrome/common/string_ordinal.cc	(revision 114254)
+++ chrome/common/string_ordinal.cc	(working copy)
@@ -174,10 +174,6 @@
                                  is_valid_(false) {
 }
 
-StringOrdinal StringOrdinal::CreateInitialOrdinal() {
-  return StringOrdinal(std::string(1, kMidDigit));
-}
-
 bool StringOrdinal::IsValid() const {
   return is_valid_;
 }
@@ -188,12 +184,6 @@
   return string_ordinal_ < other.string_ordinal_;
 }
 
-bool StringOrdinal::GreaterThan(const StringOrdinal& other) const {
-  CHECK(IsValid());
-  CHECK(other.IsValid());
-  return string_ordinal_ > other.string_ordinal_;
-}
-
 bool StringOrdinal::Equal(const StringOrdinal& other) const {
   CHECK(IsValid());
   CHECK(other.IsValid());
@@ -248,8 +238,3 @@
   CHECK(IsValid());
   return string_ordinal_;
 }
-
-bool StringOrdinalLessThan::operator() (const StringOrdinal& lhs,
-                                        const StringOrdinal& rhs) const {
-  return lhs.LessThan(rhs);
-}