[Autofill] Allow calling of |WebInputElement::IsPasswordField()|

Changed |PresubmitError| to |PresubmitPromptWarning| to allow the call.

Bug: 1013121
Change-Id: I1e38d8efb7c6bdf21568924e2cd51126a4e50aca
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1852208Reviewed-by: Dominic Battré <battre@chromium.org>
Commit-Queue: Matthias Körber <koerber@google.com>
Cr-Commit-Position: refs/heads/master@{#704587}

components/autofill/content/renderer/PRESUBMIT.py

@@ -22,9 +22,9 @@ def _CheckNoDirectPasswordCalls(input_api, output_api):
         files.append(f)
 
   if len(files):
-    return [ output_api.PresubmitError(
-        'Do not call IsPasswordField() or FormControlType() directly but ' +
-        'use IsPasswordFieldForAutofill() and FormControlTypeForAutofill() ' +
+    return [ output_api.PresubmitPromptWarning(
+        'Consider to not call IsPasswordField() or FormControlType() directly ' +
+        'but use IsPasswordFieldForAutofill() and FormControlTypeForAutofill() ' +
         'respectively. These declare text input fields as password fields ' +
         'if they have been password fields in the past. This is relevant ' +
         'for websites that allow to reveal passwords with a button that ' +