Extensions: Remove PermissionMessage (permission_message.h/cc)

extensions/common/permissions/permission_message_util.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.
 
 #ifndef EXTENSIONS_COMMON_PERMISSIONS_PERMISSION_MESSAGE_UTIL_H_
 #define EXTENSIONS_COMMON_PERMISSIONS_PERMISSION_MESSAGE_UTIL_H_
 
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/strings/string16.h"
 
 namespace extensions {
 class PermissionIDSet;
-class PermissionMessage;
 class URLPatternSet;
 }
 
 namespace permission_message_util {
 
 enum PermissionMessageProperties { kReadOnly, kReadWrite };
 
 // Get a list of hosts to display in a permission message from the given list of
 // hosts from the manifest.
-// TODO(sashab): Merge this into AddHostPermissions() once CreateFromHostList()
-// is deprecated.
+// TODO(sashab): Merge this into AddHostPermissions().
 std::vector<base::string16> GetHostListFromHosts(
     const std::set<std::string>& hosts,
     PermissionMessageProperties properties);
 
-// Creates the corresponding permission message for a list of hosts.
-// The messages change depending on how many hosts are present, and whether
-// |read_only| is true.
-// TODO(sashab): Deprecate this, prefer AddHostPermissions() instead.
-extensions::PermissionMessage CreateFromHostList(
-    const std::set<std::string>& hosts,
-    PermissionMessageProperties);
-
 // Adds the appropriate permissions from given hosts to |permissions|.
 void AddHostPermissions(extensions::PermissionIDSet* permissions,
                         const std::set<std::string>& hosts,
                         PermissionMessageProperties properties);
 
 std::set<std::string> GetDistinctHosts(
     const extensions::URLPatternSet& host_patterns,
     bool include_rcd,
     bool exclude_file_scheme);
 
 }  // namespace permission_message_util
 
 #endif  // EXTENSIONS_COMMON_PERMISSIONS_PERMISSION_MESSAGE_UTIL_H_