Remove multi-install from installer_util.

chrome/installer/util/master_preferences.cc

Index: chrome/installer/util/master_preferences.cc
diff --git a/chrome/installer/util/master_preferences.cc b/chrome/installer/util/master_preferences.cc
index ef58f813e6e8a49837c589e9d7f016761dedfc1e..2f7ccb696098ecf766689e8fc515caf039eacc72 100644
--- a/chrome/installer/util/master_preferences.cc
+++ b/chrome/installer/util/master_preferences.cc
@@ -163,12 +163,10 @@ void MasterPreferences::InitializeFromCommandLine(
   }
 
   // Strip multi-install from the dictionary, if present. This ensures that any
-  // code that probes the dictionary directly to check for multi-install (rather
-  // than calling is_multi_install()) receives false. The updated dictionary is
-  // not written back to disk.
-  master_dictionary_->Remove(std::string(master_preferences::kDistroDict) +
-                                 '.' + master_preferences::kMultiInstall,
-                             nullptr);
+  // code that probes the dictionary directly to check for multi-install
+  // receives false. The updated dictionary is not written back to disk.
+  master_dictionary_->Remove(
+      std::string(master_preferences::kDistroDict) + ".multi_install", nullptr);
 
   // Cache a pointer to the distribution dictionary. Ignore errors if any.
   master_dictionary_->GetDictionary(installer::master_preferences::kDistroDict,