Add autofill secondary KPIs

[CDRussell]

Task/Issue URL: https://app.asana.com/0/1203822806345703/1207602891714016/f

Description

Adds secondary KPIs for autofill.

Steps to test this PR

Add the following logcat filter:

"Opened autofill management screen" | "Pixel sent: m_autofill_management_opened" | "Pixel sent: m_autofill_management_delete_login" | "Pixel sent: m_autofill_management_delete_all_logins" | "Pixel sent: m_autofill_management_update_login" | "Pixel sent: m_autofill_management_save_login  | "Pixel sent: m_autofill_management_copy_username  | "Pixel sent: m_autofill_management_copy_password" 

Open password management screen, via browser overflow menu

• [x] From the browser activity, tap on the overflow button then Passwords
• [x] Verify you see m_autofill_management_opened in the logs, and source is overflow_menu

Open password management screen, via browser overflow menu

• [x] From the settings activity, tap on Passwords
• [x] Verify you see m_autofill_management_opened in the logs, and source is settings

Manually add password

• [x] From the password management screen, tap on ➕ button
• [x] Enter some details in the fields, and tap the ✔️ button
• [x] Verify you see m_autofill_management_save_login in the logs

Manually edit password (when viewing a credential)

• [x] When viewing a particular saved password (this is what you'll see after following last step), choose overflow->Edit
• [x] Edit some fields, and tap the ✔️ button
• [x] Verify you see m_autofill_management_update_login in the logs

Copy username

• [x] When viewing a particular saved password, tap the copy button in the username field
• [x] Verify you see m_autofill_management_copy_username in the logs

Copy password

• [x] When viewing a particular saved password, tap the copy button in the password field
• [x] Verify you see m_autofill_management_copy_password in the logs

Delete password

• [x] Ensure you have >= 1 saved password
• [x] When viewing a particular saved password, choose overflow->Delete, and confirm when prompted
• [x] Verify you see m_autofill_management_delete_login in the logs

Delete all passwords

• [x] Ensure you have >= 1 saved password
• [x] From the password management screen, tap on overflow -> Delete All Passwords
• [x] Confirm and authenticate when prompted
• [x] Verify you see m_autofill_management_delete_all_logins in the logs

[CDRussell]

• #4677 👈
• develop

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