base::RefCounted now DCHECKs when referenced from multiple threads.

gpu/config/gpu_control_list.h

 // Copyright (c) 2013 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 GPU_CONFIG_GPU_CONTROL_LIST_H_
 #define GPU_CONFIG_GPU_CONTROL_LIST_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 226 matching lines @@
 
    private:
     bool value_;
   };
 
   class GpuControlListEntry;
   typedef scoped_refptr<GpuControlListEntry> ScopedGpuControlListEntry;
 
   typedef base::hash_map<std::string, int> FeatureMap;
 
+  // TODO(mgiuca): Avoid using UnsafeRefCounted. http://crbug.com/469952.
   class GPU_EXPORT GpuControlListEntry
-      : public base::RefCounted<GpuControlListEntry> {
+      : public base::UnsafeRefCounted<GpuControlListEntry> {
    public:
     // Constructs GpuControlListEntry from DictionaryValue loaded from json.
     // Top-level entry must have an id number.  Others are exceptions.
     static ScopedGpuControlListEntry GetEntryFromValue(
         const base::DictionaryValue* value, bool top_level,
         const FeatureMap& feature_map,
         bool supports_feature_type_all);
 
     // Logs a control list match for this rule in the list identified by
     // |control_list_logging_name|.
@@ skipping 27 matching lines @@
 
     // Returns the blacklisted features in this entry.
     const std::set<int>& features() const;
 
     // Returns a list of blacklisted feature names in this entry.
     void GetFeatureNames(base::ListValue* feature_names,
                          const FeatureMap& feature_map,
                          bool supports_feature_type_all) const;
 
    private:
-    friend class base::RefCounted<GpuControlListEntry>;
+    friend class base::UnsafeRefCounted<GpuControlListEntry>;
 
     enum MultiGpuStyle {
       kMultiGpuStyleOptimus,
       kMultiGpuStyleAMDSwitchable,
       kMultiGpuStyleAMDSwitchableIntegrated,
       kMultiGpuStyleAMDSwitchableDiscrete,
       kMultiGpuStyleNone
     };
 
     enum MultiGpuCategory {
@@ skipping 172 matching lines @@
   bool supports_feature_type_all_;
 
   bool control_list_logging_enabled_;
   std::string control_list_logging_name_;
 };
 
 }  // namespace gpu
 
 #endif  // GPU_CONFIG_GPU_CONTROL_LIST_H_