Randomize USB serial numbers per device

[pilgrim-brave]

Current implementation brave/brave-core#17470 may end up with duplicate serial numbers if multiple USB devices are connected.

Test Cases/Examples

• STR/Cases - Implement per-device WebUSB serial farbling brave-core#18284 (comment)
• Example - Implement per-device WebUSB serial farbling brave-core#18284 (comment)

[kjozwiak]

The above requires 1.51.117 or higher for 1.51.x verification 👍

[LaurenWags]

Verified with

Brave | 1.51.117 Chromium: 113.0.5672.92 (Official Build) (x86_64)
-- | --
Revision | b6f521170062a1fa8a82c33fb223b06fec566da1-refs/branch-heads/5672_63@{#10}
OS | macOS Version 13.3.1 (a) (Build 22E772610a)

Using the STR/Cases outlined via https://dev-pages.brave.software/fingerprinting/devices.html, went through the following:

Ensured that there's multiple USB devices connected to the machine as per the following:

Allow Fingerprinting

Example	Example	Example

Block Fingerprinting

Example	Example	Example

Aggressive Fingerprinting

Example	Example	Example

[MadhaviSeelam]

Verification `PASSED using

Brave | 1.51.117 Chromium: 113.0.5672.92 (Official Build) (64-bit)
-- | --
Revision | b6f521170062a1fa8a82c33fb223b06fec566da1-refs/branch-heads/5672_63@{#10}
OS | Windows 11 Version 22H2 (Build 22621.1702)

Using the STR/Cases outlined via https://dev-pages.brave.software/fingerprinting/devices.html, went through the following:

Ensured that there's multiple USB devices connected to the machine as per the following:

Allow Fingerprinting

Example	Example

Block Fingerprinting

Example	Example

Aggressively block Fingerprinting

Example	Example

[btlechowski]

Verification passed on

Brave	1.51.118 Chromium: 113.0.5672.126 (Official Build) (64-bit)
Revision	c541687b21a73452ab403e2dced7033ddc97ee9d-refs/branch-heads/5672@{#1202}
OS	Ubuntu 18.04 LTS

Allow Fingerprinting

Example	Example

Block Fingerprinting

Example	Example

Aggressively block Fingerprinting

Example	Example

[hffvld]

Verified on Google Pixel 7 and Galaxy Tab S8 using version(s):

Device/OS: 
- Google Pixel 7 [panther_beta-user 14 UPB1.230309.017 release-keys]
- SM-X700 Galaxy Tab S8 [gts8wifixx-user 13 TP1A.220624.014 release-keys]
Brave build: 1.51.118
Chromium: 113.0.5672.126 (Official Build) (64-bit)
Revision: c541687b21a73452ab403e2dced7033ddc97ee9d-refs/branch-heads/5672@{#1202}

---

STEPS:

1. Connect multiple USB devices
2. Open to https://dev-pages.brave.software/fingerprinting/devices.html
3. Go through the flow
4. Now open https://dev-pages.bravesoftware.com/fingerprinting/devices.html
5. Go through the flow

ACTUAL RESULTS:

• Verified when multiple USB devices are connected, no duplicate serial numbers are shown

Phone - PASS

Allow all fingerprinting

1	2	3	4

Fingerprinting blocked (standard)

1	2	3	4

Fingerprinting blocked (strict, may break sites)

1	2	3	4

Tablet - PASS

Allow all fingerprinting

1	2	3

Fingerprinting blocked (standard)

1	2	3

Fingerprinting blocked (strict, may break sites)

1	2	3