Notify user that a browser restart is required for in-line tipping toggle to take effect

[Miyayes]

Description

When toggling in-line tipping buttons, user needs to restart the browser in order for this to take effect.

Currently, there is no notice or banner telling the user that a browser restart is required, leading to confusion.

Solution

Whenever inline (content-level) tipping checkboxes are toggled in brave://rewards (settings page), put a banner at the top or bottom (can be existing Chromium object if easier) telling the user a browser restart is required for changes to take effect.

(Maybe compare the banner that shows up at bottom in brave://flags when things are toggled.)

Notes

Related: #5551

[emerick]

@Miyayes I show a small Relaunch button in the tips settings box when any inline tip option is toggled. This mimics how Chrome handles settings changes that require a browser restart (for example, when changing the default UI language in brave://settings). Let me know what you think!

[stephendonner]

Verified PASSED using the testplan from brave/brave-core#9582 with

Brave	1.29.45 Chromium: 92.0.4515.115 (Official Build) nightly (x86_64)
Revision	48cb2f4029b84b003719740a6cf9ca73f374a857-refs/branch-heads/4515_105@{#4}
OS	macOS Version 12.0 (Build 21A5294g)

Steps:

1. new profile
2. launched Brave
3. opened brave://rewards
4. clicked on the Tip Settings icon
5. toggled Reddit to off (deselected)
6. confirmed the Relaunch button appeared beneath the list of sites in Tip Settings
7. confirmed clicking Relaunch restarted the browser and restored current tabs
8. visited reddit.com/u/alex_the_brave verified it doesn't show tip buttons per new setting
9. toggled Twitter to off (deselected)
10. confirmed clicking on the Relaunch button restarted the browser
11. visited twitter.com/bravelaurenwags and confirmed no in-line tipping buttons
12. restored both Reddit and Twitter prefs back to on (selected)
13. confirmed their respective inline tipping buttons appears and worked (brought up appropriate tipping banner)

relaunch	reddit - disabled	reddit - enabled	twitter - disabled	twitter - enabled	github - disabled	github - enabled

---

Verification passed on

Brave | 1.29.60 Chromium: 92.0.4515.131 (Official Build) beta (64-bit)
-- | --
Revision | 6b8d6c56ce21e38a72f7c4becb5abc1fa5134f29-refs/branch-heads/4515@{#1933}
OS | Windows 10 OS Version 2009 (Build 19043.1165)

• Verified the test plan from Notify user that browser start is needed after toggling inline tipping setting brave-core#9582

Reddit disabled	Relaunch	Twitter disabled	Relaunch	Github disabled	Relaunch

---

Verification passed on

Brave	1.29.60 Chromium: 92.0.4515.131 (Official Build) beta (64-bit)
Revision	6b8d6c56ce21e38a72f7c4becb5abc1fa5134f29-refs/branch-heads/4515@{#1933}
OS	Ubuntu 18.04 LTS

• Verified the test plan from Notify user that browser start is needed after toggling inline tipping setting brave-core#9582

Reddit

Twitter

Github