[spelling] existance to existence

components/password_manager/core/browser/affiliation_utils.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file contains utilities related to working with "facets".
 //
 // A "facet" is defined as the manifestation of a logical application on a given
 // platform. For example, "My Bank" may have released an Android application
 // and a Web application accessible from a browser. These are all facets of the
 // "My Bank" logical application.
@@ skipping 48 matching lines @@
 namespace autofill {
 struct PasswordForm;
 }  // namespace autofill
 
 namespace password_manager {
 
 // Encapsulates a facet URI in canonical form.
 //
 // This is a very light-weight wrapper around an std::string containing the text
 // of the URI, and can be passed around as a value. The main rationale for the
-// existance of this class is to make it clearer in the code when a certain URI
+// existence of this class is to make it clearer in the code when a certain URI
 // is known to be a valid facet URI in canonical form, and to allow verifying
 // and converting URIs to such canonical form.
 //
 // Note that it would be impractical to use GURL to represent facet URIs, as
 // GURL has built-in logic to parse the rest of the URI according to its scheme,
 // and obviously, it does not recognize the "android" scheme. Therefore, after
 // parsing, everything ends up in the path component, which is not too helpful.
 class FacetURI {
  public:
   FacetURI();
@@ skipping 108 matching lines @@
 
 struct FacetURIHash {
   size_t operator()(const FacetURI& facet_uri) const {
     return std::hash<std::string>()(facet_uri.potentially_invalid_spec());
   }
 };
 
 }  // namespace password_manager
 
 #endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_AFFILIATION_UTILS_H_