Do not involve PasswordManagerDriver in filling HTTP-auth forms; also check realm

components/password_manager/core/browser/password_form_manager.cc

Index: components/password_manager/core/browser/password_form_manager.cc
diff --git a/components/password_manager/core/browser/password_form_manager.cc b/components/password_manager/core/browser/password_form_manager.cc
index 6ba4ba2248a03e2474246139561e1d6a7fb30930..1d5dd8386fcd5b25ee3eca7a5525a9bfd7683ff7 100644
--- a/components/password_manager/core/browser/password_form_manager.cc
+++ b/components/password_manager/core/browser/password_form_manager.cc
@@ -113,7 +113,10 @@ PasswordFormManager::PasswordFormManager(
       user_action_(kUserActionNone),
       submit_result_(kSubmitResultNotSubmitted),
       form_type_(kFormTypeUnspecified) {
-  drivers_.push_back(driver);
+  DCHECK_EQ(observed_form.scheme == PasswordForm::SCHEME_HTML,
+            driver != nullptr);
+  if (driver)
+    drivers_.push_back(driver);
 }
 
 PasswordFormManager::~PasswordFormManager() {
@@ -489,6 +492,7 @@ void PasswordFormManager::OnRequestDone(
 
 void PasswordFormManager::ProcessFrame(
     const base::WeakPtr<PasswordManagerDriver>& driver) {
+  DCHECK_EQ(PasswordForm::SCHEME_HTML, observed_form_.scheme);
   if (state_ == POST_MATCHING_PHASE)
     ProcessFrameInternal(driver);
 
@@ -504,6 +508,7 @@ void PasswordFormManager::ProcessFrame(
 
 void PasswordFormManager::ProcessFrameInternal(
     const base::WeakPtr<PasswordManagerDriver>& driver) {
+  DCHECK_EQ(PasswordForm::SCHEME_HTML, observed_form_.scheme);
   if (!driver || manager_action_ == kManagerActionBlacklisted)
     return;
 
@@ -536,6 +541,15 @@ void PasswordFormManager::ProcessFrameInternal(
                               *preferred_match_, wait_for_username);
 }
 
+void PasswordFormManager::ProcessLoginPrompt() {
+  DCHECK_NE(PasswordForm::SCHEME_HTML, observed_form_.scheme);
+  if (!preferred_match_)
+    return;
+
+  manager_action_ = kManagerActionAutofilled;
+  password_manager_->AutofillHttpAuth(best_matches_, *preferred_match_);
+}
+
 void PasswordFormManager::OnGetPasswordStoreResults(
     ScopedVector<PasswordForm> results) {
   DCHECK_EQ(state_, MATCHING_PHASE);
@@ -567,6 +581,8 @@ void PasswordFormManager::OnGetPasswordStoreResults(
   if (manager_action_ != kManagerActionBlacklisted) {
     for (auto const& driver : drivers_)
       ProcessFrameInternal(driver);
+    if (observed_form_.scheme != PasswordForm::SCHEME_HTML)
+      ProcessLoginPrompt();
   }
 }