Make component updater compatible with NetworkService

[iefremov]

(For more context see the parent issue #2351)
(To run the browser with enabled NetworkService use --enable-features=NetworkService)

The component updater problem is rooted at BraveSystemNetworkDelegate. Here we do some hardcoded URL rewrites. It seems that BraveSystemNetworkDelegate is not going to be refactored in the parent issue and should be treated separately. Probably, the way to fix the problem is to make yet another custom URLLoader and/or URLLoaderFactory

[btlechowski]

Reproduced on

Brave	0.67.111 Chromium: 75.0.3770.100 (Official Build) beta (64-bit)
Revision	cd0b15c8b6a4e70c44e27f35c37a4029bad3e3b0-refs/branch-heads/3770@{#1033}
OS	Windows 7 Service Pack 1 (Build 7601.24494)

The tor binary is not downloaded with NetworkService flag enabled

[kjozwiak]

Reproduced on macOS 10.14.5 x64 using the following build:

Brave	0.67.115 Chromium: 76.0.3809.62 (Official Build) beta (64-bit)
Revision	7b77856b3aa34d72f246d12340fc1ded8b2c0e83-refs/branch-heads/3809@{#798}
OS	Mac OS X

STR:

• launch brave using --enable-features=NetworkService
• open a Tor window and you'll notice that the component isn't being downloaded