[Autofill] Fill fields that have an autocomplete attributes even if not in a form.

components/autofill/core/common/form_data.cc

Index: components/autofill/core/common/form_data.cc
diff --git a/components/autofill/core/common/form_data.cc b/components/autofill/core/common/form_data.cc
index e0930834e340701bafc872d19c82409b60223d55..a1a5e822939cebb8fd9626000db7d88f79d5baba 100644
--- a/components/autofill/core/common/form_data.cc
+++ b/components/autofill/core/common/form_data.cc
@@ -18,7 +18,7 @@ namespace autofill {
 
 namespace {
 
-const int kPickleVersion = 4;
+const int kPickleVersion = 5;
 
 bool ReadGURL(base::PickleIterator* iter, GURL* url) {
   std::string spec;
@@ -60,26 +60,23 @@ void LogDeserializationError(int version) {
 
 }  // namespace
 
-FormData::FormData()
-    : is_form_tag(true) {
-}
+FormData::FormData() : is_form_tag(true), is_formless_checkout(false) {}
 
 FormData::FormData(const FormData& data)
     : name(data.name),
       origin(data.origin),
       action(data.action),
       is_form_tag(data.is_form_tag),
-      fields(data.fields) {
-}
+      is_formless_checkout(data.is_formless_checkout),
+      fields(data.fields) {}
 
 FormData::~FormData() {
 }
 
 bool FormData::SameFormAs(const FormData& form) const {
-  if (name != form.name ||
-      origin != form.origin ||
-      action != form.action ||
+  if (name != form.name || origin != form.origin || action != form.action ||
       is_form_tag != form.is_form_tag ||
+      is_formless_checkout != form.is_formless_checkout ||
       fields.size() != form.fields.size())
     return false;
   for (size_t i = 0; i < fields.size(); ++i) {
@@ -90,16 +87,15 @@ bool FormData::SameFormAs(const FormData& form) const {
 }
 
 bool FormData::operator<(const FormData& form) const {
-  return std::tie(name, origin, action, is_form_tag, fields) <
-         std::tie(form.name, form.origin, form.action, form.is_form_tag,
-                  form.fields);
+  return std::tie(name, origin, action, is_form_tag, is_formless_checkout,
+                  fields) < std::tie(form.name, form.origin, form.action,
+                                     form.is_form_tag,
+                                     form.is_formless_checkout, form.fields);
 }
 
 std::ostream& operator<<(std::ostream& os, const FormData& form) {
-  os << base::UTF16ToUTF8(form.name) << " "
-     << form.origin << " "
-     << form.action << " "
-     << form.is_form_tag << " "
+  os << base::UTF16ToUTF8(form.name) << " " << form.origin << " " << form.action
+     << " " << form.is_form_tag << " " << form.is_formless_checkout << " "
      << "Fields:";
   for (size_t i = 0; i < form.fields.size(); ++i) {
     os << form.fields[i] << ",";
@@ -114,6 +110,7 @@ void SerializeFormData(const FormData& form_data, base::Pickle* pickle) {
   pickle->WriteString(form_data.action.spec());
   SerializeFormFieldDataVector(form_data.fields, pickle);
   pickle->WriteBool(form_data.is_form_tag);
+  pickle->WriteBool(form_data.is_formless_checkout);
 }
 
 void SerializeFormDataToBase64String(const FormData& form_data,
@@ -170,6 +167,13 @@ bool DeserializeFormData(base::PickleIterator* iter, FormData* form_data) {
     form_data->is_form_tag = true;
   }
 
+  if (version >= 5) {
+    if (!iter->ReadBool(&temp_form_data.is_formless_checkout)) {
+      LogDeserializationError(version);
+      return false;
+    }
+  }
+
   *form_data = temp_form_data;
   return true;
 }