The Safe Browsing client-side phishing detection model is downloaded

[fmarier]

At first run, Brave browsers fetch the following file from Google (via Brave proxy):

   GET https://static.brave.com/safebrowsing/csd/client_model_v5_variation_6.pb HTTP/2.0
       ← 200 application/octet-stream 80.13k 159ms

I'm pretty sure that feature is disabled in Brave and so this is unnecessary.

[stephendonner]

Verified PASSED using

Brave	1.30.56 Chromium: 93.0.4577.58 (Official Build) beta (x86_64)
Revision	c4410ece044414ea42fa4ba328d08195e818a99c-refs/branch-heads/4577@{#1076}
OS	macOS Version 11.5.2 (Build 20G95)

Steps:

1. new profile
2. launched Charles Proxy
3. launched Brave
4. ran through I ran through all of the Webpage and Desktop Download tests on https://testsafebrowsing.appspot.com/ successfully.
5. checked Charles Proxy for both imefjhfbkmcmebodilednhmaccmincoa and any calls to static.brave.com.

Confirmed:

1. no requests from imefjhfbkmcmebodilednhmaccmincoa
2. no calls to static.brave.com nor ssl.gstatic.com
3. the tests worked identically to my run using 1.28.106

---

Verification passed on

Brave | 1.30.59 Chromium: 93.0.4577.58 (Official Build) beta (64-bit)
-- | --
Revision | c4410ece044414ea42fa4ba328d08195e818a99c-refs/branch-heads/4577@{#1076}
OS | Windows 10 OS Version 2009 (Build 19043.1165)

• Verified the test plan from Disable client side phishing component and model brave-core#9813

Confirmed:

1. ran through I ran through all of the Webpage and Desktop Download tests on https://testsafebrowsing.appspot.com/ successfully.
2. no requests from imefjhfbkmcmebodilednhmaccmincoa
3. no calls to static.brave.com nor ssl.gstatic.com

---

Verification passed on

Brave	1.30.81 Chromium: 94.0.4606.50 (Official Build) (64-bit)
Revision	0c1ac2c4842a4746c27c937c1a0453f98da1a972-refs/branch-heads/4606@{#1049}
OS	Ubuntu 18.04 LTS

• Verified the test plan from Disable client side phishing component and model brave-core#9813

Confirmed:

1. ran through I ran through all of the Webpage and Desktop Download tests on https://testsafebrowsing.appspot.com/ successfully.
2. no requests from imefjhfbkmcmebodilednhmaccmincoa
3. no calls to static.brave.com nor ssl.gstatic.com