Use valid /prefetch arguments for process launches on Windows. - do not submit

components/startup_metric_utils/common/pre_read_field_trial_utils_win.h

Index: components/startup_metric_utils/common/pre_read_field_trial_utils_win.h
diff --git a/components/startup_metric_utils/common/pre_read_field_trial_utils_win.h b/components/startup_metric_utils/common/pre_read_field_trial_utils_win.h
index 612f76b2f43d39cc88436d2e7948ca2b9e11600b..d2245e331835bea02b0d6d6f6df54bba5dffa35c 100644
--- a/components/startup_metric_utils/common/pre_read_field_trial_utils_win.h
+++ b/components/startup_metric_utils/common/pre_read_field_trial_utils_win.h
@@ -26,12 +26,14 @@ using RegisterPreReadSyntheticFieldTrialCallback =
 // |only_if_cold| option is set if only cold DLLs should be pre-read. The
 // |prefetch_virtual_memory| option is set if the
 // ::PrefetchVirtualMemory function should be used to pre-read DLLs, if
-// available.
+// available. The |prefetch_argument| option is set if a prefetch argument
+// should be specified when launching a process.
 void GetPreReadOptions(const base::string16& product_registry_path,
                        bool* no_pre_read,
                        bool* high_priority,
                        bool* only_if_cold,
-                       bool* prefetch_virtual_memory);
+                       bool* prefetch_virtual_memory,
+                       bool* prefetch_argument);

[gab, 2016/01/18 19:10:52]

As suggested in caller above I'd say let's do:

enum PreReadOptions {
  NO_PRE_READ = 1 << 0,
  HIGH_PRIORITY = 1 << 1,
  ONLY_IF_COLD = 1 << 2,
  PREFETCH_VIRTUAL_MEMORY = 1 << 3,
  PREFETCH_ARGUMENT = 1 << 4,
}

int GetPreReadOptions(const base::string16& product_registry_path);
  

+comments

 
 // Updates DLL pre-reading options in the registry with the latest info for the
 // next startup. |product_registry_path| is the registry path under which the