Remove raw base::DictionaryValue::Set in //content

content/browser/gpu/gpu_data_manager_impl.h

Index: content/browser/gpu/gpu_data_manager_impl.h
diff --git a/content/browser/gpu/gpu_data_manager_impl.h b/content/browser/gpu/gpu_data_manager_impl.h
index 6c616cf2833ac2ffbe36368d3bc8b9f38e98b635..8c45dff4f2442c62c1f3b36416f79b2e1512b4f7 100644
--- a/content/browser/gpu/gpu_data_manager_impl.h
+++ b/content/browser/gpu/gpu_data_manager_impl.h
@@ -147,9 +147,8 @@ class CONTENT_EXPORT GpuDataManagerImpl
 
   void ProcessCrashed(base::TerminationStatus exit_code);
 
-  // Returns a new copy of the ListValue.  Caller is responsible to release
-  // the returned value.
-  base::ListValue* GetLogMessages() const;
+  // Returns a new copy of the ListValue.
+  std::unique_ptr<base::ListValue> GetLogMessages() const;
 
   // Called when switching gpu.
   void HandleGpuSwitch();