One perf test for windows VirtualQueryEx calls.

base/process/process_metrics_win.cc

Index: base/process/process_metrics_win.cc
diff --git a/base/process/process_metrics_win.cc b/base/process/process_metrics_win.cc
index f5b191dfc08325f39a19b6f7331ae3c7e93a089a..22c4fdb96e6557dd3ed871ad073942c306bea0db 100644
--- a/base/process/process_metrics_win.cc
+++ b/base/process/process_metrics_win.cc
@@ -325,7 +325,7 @@ ProcessMetrics::ProcessMetrics(ProcessHandle process)
     BOOL result = ::DuplicateHandle(::GetCurrentProcess(), process,
                                     ::GetCurrentProcess(), &duplicate_handle,
                                     PROCESS_QUERY_INFORMATION, FALSE, 0);
-    DCHECK(result);
+    DPCHECK(result);
     process_.Set(duplicate_handle);
   }
 }