Remove PostFile() from session; refine cmake files; replace final with override.

webcc/utility.cc

@@ -2,6 +2,7 @@
 
 #include <sstream>
 
+#include "boost/algorithm/string.hpp"
 #include "boost/uuid/random_generator.hpp"
 #include "boost/uuid/uuid_io.hpp"
 
@@ -14,4 +15,20 @@ std::string RandomUuid() {
   return ss.str();
 }
 
+bool Split2(const std::string& str, char token, std::string* part1,
+            std::string* part2) {
+  std::size_t pos = str.find(token);
+  if (pos == std::string::npos) {
+    return false;
+  }
+
+  *part1 = str.substr(0, pos);
+  *part2 = str.substr(pos + 1);
+
+  boost::trim(*part1);
+  boost::trim(*part2);
+
+  return true;
+}
+
 }  // namespace webcc