Safety check: weak password flag

* Introduces a flag for showing both compromised and weak password
  counts in safety check (SC).
* Puts the SC side of this UI change behind the flag.

Bug: 1128904
Change-Id: I62c11d6893bd539d59796c3397a5d708b07ce253
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2562666
Reviewed-by: Esmael Elmoslimany <[email protected]>
Commit-Queue: Rainhard Findling <[email protected]>
Cr-Commit-Position: refs/heads/master@{#832272}
diff --git a/chrome/browser/flag_descriptions.h b/chrome/browser/flag_descriptions.h
index 494edb6..7e0a166 100644
--- a/chrome/browser/flag_descriptions.h
+++ b/chrome/browser/flag_descriptions.h
@@ -1105,6 +1105,9 @@
 extern const char kSafetyCheckAndroidName[];
 extern const char kSafetyCheckAndroidDescription[];
 
+extern const char kSafetyCheckWeakPasswordsName[];
+extern const char kSafetyCheckWeakPasswordsDescription[];
+
 extern const char kProminentDarkModeActiveTabTitleName[];
 extern const char kProminentDarkModeActiveTabTitleDescription[];