[Password Manager] Ignore autofilling invisible password fields.

components/autofill/content/renderer/password_form_conversion_utils.cc

Index: components/autofill/content/renderer/password_form_conversion_utils.cc
diff --git a/components/autofill/content/renderer/password_form_conversion_utils.cc b/components/autofill/content/renderer/password_form_conversion_utils.cc
index dc87799d0c887b0be691584de12d78b1ac649477..749bb23af6ab044b3c14baa952101b0f7b826c6d 100644
--- a/components/autofill/content/renderer/password_form_conversion_utils.cc
+++ b/components/autofill/content/renderer/password_form_conversion_utils.cc
@@ -364,6 +364,7 @@ bool GetPasswordForm(const SyntheticForm& form,
     // was made readonly by JavaScript before submission. We can do this by
     // checking whether password element was updated not from JavaScript.
     if (input_element->isPasswordField() &&
+        !IsInputElementHidden(input_element) &&
         (!input_element->isReadOnly() ||
          (nonscript_modified_values &&
           nonscript_modified_values->find(*input_element) !=
@@ -637,4 +638,9 @@ bool HasAutocompleteAttributeValue(const blink::WebInputElement& element,
       value_in_lowercase);
 }
 
+bool IsInputElementHidden(blink::WebInputElement* input_element) {
+  // Hidden elements have empty bounding box.
+  return input_element->boundsInViewportSpace().isEmpty();
+}
+
 }  // namespace autofill