[spelling] existance to existence

content/browser/plugin_private_storage_helper.cc

Index: content/browser/plugin_private_storage_helper.cc
diff --git a/content/browser/plugin_private_storage_helper.cc b/content/browser/plugin_private_storage_helper.cc
index c6d19acf1ef7e7882bcac574d075e607aea56b25..2b25d828861f29abf1f1363a7e96d8d0a261fe81 100644
--- a/content/browser/plugin_private_storage_helper.cc
+++ b/content/browser/plugin_private_storage_helper.cc
@@ -43,7 +43,7 @@ std::string StringTypeToString(const base::FilePath::StringType& value) {
 }
 
 // Helper for checking the plugin private data for a specified origin and
-// plugin for the existance of any file that matches the time range specified.
+// plugin for the existence of any file that matches the time range specified.
 // All of the operations in this class are done on the IO thread.
 //
 // This class keeps track of outstanding async requests it generates, and does