Add ipfs: and ipns: protocol associations

[da2x]

Description

Brave should register with the host OS as a handler for ipfs: and ipns: URIs.

Steps to Reproduce

• (On Windows): Press Win+R, type ipfs://bafkreigcnxudvpojjfwncmauociy5q46zsq46oe66cxbyzie3imabuoege, and press Enter
• (On macOS): Open the Terminal, and type open ipfs://bafkreigcnxudvpojjfwncmauociy5q46zsq46oe66cxbyzie3imabuoege, and press Enter.
• (On Linux): Open a shell and type xdg-open ipfs://bafkreigcnxudvpojjfwncmauociy5q46zsq46oe66cxbyzie3imabuoege

Expected result:

Brave should open and display a page with the word “PASS” on it.

Actual result:

Variations on an error saying no app can open the link.

Reproduces how often:

Every time.

Brave version (brave://version info)

87.1.19.62

Version/Channel Information:

Beta

Miscellaneous Information:

• On Linux, append MimeType=x-scheme-handler/ipfs;MimeType=x-scheme-handler/ipns; to MimeType= in the Brave.desktop file.
• On macOS, append ipfs: and ipns: to the CFBundleURLSchemes array in Info.plist.
• On Windows, add the missing schemes through Microsoft’s convoluted registry process.

[ingokeck]

Please note that this is not the correct URI syntax. There should not be a '//' in the URI if the resource is just an IPFS hash like in this case. Please see #13677 for details.

[stephendonner]

Verified FIXED on nightly using the steps to reproduce given in the original comment, with:

Brave	1.22.39 Chromium: 89.0.4389.58 (Official Build) nightly (x86_64)
Revision	1a139f28ecc27719439e37c6b1533cee999cb802-refs/branch-heads/4389@{#1134}
OS	macOS Version 11.2.1 (Build 20D74)

Note also, as already mentioned, that #13677 is open for correcting the URI(s).

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Verification passed on

Brave	1.22.53 Chromium: 89.0.4389.72 (Official Build) beta (64-bit)
Revision	3f345f156bfd157bd1bea06310e55f3fb2490359-refs/branch-heads/4389@{#1393}
OS	Ubuntu 18.04 LTS

Verified test plan from the description

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Verification passed on

Brave | 1.22.56 Chromium: 89.0.4389.72 (Official Build) dev (64-bit)
-- | --
Revision | 3f345f156bfd157bd1bea06310e55f3fb2490359-refs/branch-heads/4389@{#1393}
OS | Windows 10 OS Version 2004 (Build 19041.804)

Verified the test plan from the description