Add flag for single click autofill

components/autofill/core/common/autofill_switches.cc

Index: components/autofill/core/common/autofill_switches.cc
diff --git a/components/autofill/core/common/autofill_switches.cc b/components/autofill/core/common/autofill_switches.cc
index 7e7a16ba6e1292488c88ab83350037b110c316b2..38b8d45dc9fab6071d65a0b91ea8cb1e82c05206 100644
--- a/components/autofill/core/common/autofill_switches.cc
+++ b/components/autofill/core/common/autofill_switches.cc
@@ -11,6 +11,9 @@ namespace switches {
 // account creation.
 const char kDisablePasswordGeneration[]     = "disable-password-generation";
 
+// The "disable" flag for kEnableSingleClickAutofill.
+const char kDisableSingleClickAutofill[]    = "disable-single-click-autofill";
+
 // Local heuristics override server predictions for name types.
 const char kDisambiguateAutofillServerNameTypes[] =
     "disambiguate-autofill-server-name-types";
@@ -19,6 +22,9 @@ const char kDisambiguateAutofillServerNameTypes[] =
 // account creation.
 const char kEnablePasswordGeneration[]      = "enable-password-generation";
 
+// Enables/disables suggestions without typing anything (on first click).
+const char kEnableSingleClickAutofill[]     = "enable-single-click-autofill";
+
 // Ignores autocomplete="off" for Autofill data (profiles + credit cards).
 const char kIgnoreAutocompleteOffForAutofill[] =
     "ignore-autocomplete-off-autofill";