Password manager on iOS should understand non-HTML landing pages

ios/chrome/browser/passwords/password_controller.mm

Index: ios/chrome/browser/passwords/password_controller.mm
diff --git a/ios/chrome/browser/passwords/password_controller.mm b/ios/chrome/browser/passwords/password_controller.mm
index 1938757d5af90ad507bb7f9f11041de8b2e5c704..b62751e6912dc48185e64ceef3f0e003e9b49350 100644
--- a/ios/chrome/browser/passwords/password_controller.mm
+++ b/ios/chrome/browser/passwords/password_controller.mm
@@ -339,13 +339,19 @@ bool GetPageURLAndCheckTrustLevel(web::WebState* web_state, GURL* page_url) {
   if (!GetPageURLAndCheckTrustLevel(webState, &pageURL))
     return;
 
-  if (!web::UrlHasWebScheme(pageURL) || !webState->ContentIsHTML())
+  if (!web::UrlHasWebScheme(pageURL))
     return;
 
   // Notify the password manager that the page loaded so it can clear its own
   // per-page state.
   passwordManager_->DidNavigateMainFrame();
 
+  if (!webState->ContentIsHTML()) {
+    // If the current page is not HTML, it does not contain any HTML forms.
+    [self
+        didFinishPasswordFormExtraction:std::vector<autofill::PasswordForm>()];
+  }
+
   // Read all password forms from the page and send them to the password
   // manager.
   base::WeakNSObject<PasswordController> weakSelf(self);