Move syncer::kModelTypeInfoMap array to read-only data segment

components/sync/syncable/model_type.cc

 // Copyright (c) 2012 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.
 
 #include "components/sync/base/model_type.h"
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "base/strings/string_split.h"
@@ skipping 13 matching lines @@
 #include "components/sync/protocol/search_engine_specifics.pb.h"
 #include "components/sync/protocol/session_specifics.pb.h"
 #include "components/sync/protocol/sync.pb.h"
 #include "components/sync/protocol/theme_specifics.pb.h"
 #include "components/sync/protocol/typed_url_specifics.pb.h"
 #include "components/sync/syncable/syncable_proto_util.h"
 
 namespace syncer {
 
 struct ModelTypeInfo {
-  const ModelType model_type;
+  ModelType model_type;
   // Model Type notification string.
   // This needs to match the corresponding proto message name in sync.proto
-  const char* const notification_type;
+  const char* notification_type;
   // Root tag for Model Type
   // This should be the same as the model type but all lowercase.
-  const char* const root_tag;
+  const char* root_tag;
   // String value for Model Type
   // This should be the same as the model type but space separated and the
   // first letter of every word capitalized.
-  const char* const model_type_string;
+  const char* model_type_string;
   // SpecificsFieldNumber for Model Type
-  const int specifics_field_number;
+  int specifics_field_number;
   // Histogram value should be unique for the Model Type, Existing histogram
   // values should never be modified without updating "SyncModelTypes" enum in
   // histograms.xml to maintain backward compatibility.
-  const int model_type_histogram_val;
+  int model_type_histogram_val;
 };
 
 // Below struct entries are in the same order as their definition in the
 // ModelType enum. Don't forget to update the ModelType enum when you make
 // changes to this list.
 // Struct field values should be unique across the entire map.
 const ModelTypeInfo kModelTypeInfoMap[] = {
     {UNSPECIFIED, "", "", "Unspecified", -1, 0},
     {TOP_LEVEL_FOLDER, "", "", "Top Level Folder", -1, 1},
     {BOOKMARKS, "BOOKMARK", "bookmarks", "Bookmarks",
@@ skipping 712 matching lines @@
 bool TypeSupportsHierarchy(ModelType model_type) {
   // TODO(stanisc): crbug/438313: Should this also include TOP_LEVEL_FOLDER?
   return model_type == BOOKMARKS;
 }
 
 bool TypeSupportsOrdering(ModelType model_type) {
   return model_type == BOOKMARKS;
 }
 
 }  // namespace syncer