[Autofill] Removed obsolete feature AutofillSaveOnProbablySubmitted.

The feature is enabled by default and is not subject to an active
experiment.

Bug: 1007974
Change-Id: I96bae8f4a0ad8493e1c32bfecfe9814e4190fef5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2409907
Commit-Queue: Christoph Schwering <schwering@google.com>
Reviewed-by: Matthias Körber <koerber@google.com>
Cr-Commit-Position: refs/heads/master@{#809604}

components/autofill/core/browser/autofill_manager.cc

@@ -679,13 +679,6 @@ void AutofillManager::OnFormSubmittedImpl(const FormData& form,
                         << Br{} << form;
   }
 
-  // TODO(crbug.com/801698): handle PROBABLY_FORM_SUBMITTED.
-  if (source == SubmissionSource::PROBABLY_FORM_SUBMITTED &&
-      !base::FeatureList::IsEnabled(
-          features::kAutofillSaveOnProbablySubmitted)) {
-    return;
-  }
-
   // Always upload page language metrics.
   LogLanguageMetrics(client_->GetLanguageState());
 

components/autofill/core/common/autofill_features.cc

@@ -241,9 +241,6 @@ const base::Feature kAutofillRichMetadataQueries{
 const base::Feature kAutofillSaveAndFillVPA{"AutofillSaveAndFillVPA",
                                             base::FEATURE_DISABLED_BY_DEFAULT};
 
-const base::Feature kAutofillSaveOnProbablySubmitted{
-    "AutofillSaveOnProbablySubmitted", base::FEATURE_ENABLED_BY_DEFAULT};
-
 // Enables creating a new form section when an unstructured name input 
 // containing a |NAME_LAST| field is encountered after a structured name input.
 const base::Feature kAutofillSectionUponRedundantNameInfo{

components/autofill/core/common/autofill_features.h

@@ -64,7 +64,6 @@ extern const base::Feature kAutofillProfileServerValidation;
 extern const base::Feature kAutofillRestrictUnownedFieldsToFormlessCheckout;
 extern const base::Feature kAutofillRichMetadataQueries;
 extern const base::Feature kAutofillSaveAndFillVPA;
-extern const base::Feature kAutofillSaveOnProbablySubmitted;
 extern const base::Feature kAutofillSectionUponRedundantNameInfo;
 extern const base::Feature kAutofillServerCommunication;
 extern const base::Feature kAutofillShowAllSuggestionsOnPrefilledForms;