Improve logging in password manager internals page
This CL changes the return value of
PasswordManagerClient::PromptUserToSavePassword to bool, indicating if
the prompt was indeed displayed, and logs that appropriately through |logger|
BUG=
393138
Committed:
https://crrev.com/535e290f8d25b2fb9a8eea0ca1b53d1d6c76f2a6
Cr-Commit-Position: refs/heads/master@{#296985}