Sync v2

[darkdh]

sync v1 will be completely removed and sync v2 will fully run on chromium sync engine with

1. Sync Chain concept inherited from v1
   • UI spec specified in New Sync v2 UI wiring #9241
2. Brave specific auth flow
   1. Derive public/private key pair from seed
   2. Fetch timestamp from server
   3. Compose access token by timestamp, signed timestamp and public key
3. Client encryption
   • Use bip39 keywords of seed as custom passphrase
   • Clients will derive encryption/decryption key based on the passphrase
4. Migration from v1
   • Reset sync engine to clean state
   • Strip off meta info store in bookmarks used by v1

[artella-coding]

@darkdh While the team is working on sync any chance someone could implement import/export from/to file for the Android Browser (#6378) ? With Sync v1 (which i performed just now) I was finding 130-170 bookmarks were being synced every 80 seconds. This means if you have a lot of bookmarks it will take a long time for sync to complete.

[TitanKing]

This is probably the most important missing feature in Brave, good luck, can't wait to get rid of Soros sponsored Firefox.

[btlechowski]

Verification passed on

Brave	1.12.107 Chromium: 84.0.4147.105 (Official Build) (64-bit)
Revision	a6b12dfad6663f13a7e16e9a42a6a4975374096b-refs/branch-heads/4147@{#943}
OS	Ubuntu 18.04 LTS

Verified test plan from brave/qa-resources#172
Verified test plan from brave/brave-core#5294

Upgrade scenario
profile/Default/Bookmarks for Sync 1 on 1.11.101

Bookmarks file: Bookmarks_before.txt

After Upgrade - all the sync meta data is gone

Bookmarks file: Bookmarks_after.txt
Note: sync_metadata at the bottom of Bookmarks file is expected.

Verified that bookmarks are retained after upgrade

Verified that message is shown after upgrade

Verified able to create sync 2 chain. Encountered #11116

---

Verification passed on

Brave | 1.12.112 Chromium: 84.0.4147.125 (Official Build) (64-bit)
-- | --
Revision | d0784639447f2e10d32ebaf9861092b20cfde286-refs/branch-heads/4147@{#1059}
OS | Windows 10 OS Version 1903 (Build 18362.959)

• Verified test plan from Sync Test Plan qa-resources#172
• Verified test plan from Sync v2 brave-core#5294

Upgrade Scenarios

Brave 1.11.x (Sync V1) synced is enabled and imported 1000 bookmarks - meta info is displayed in profile/Default/Bookmarks

Upgraded to 1.12.x (Sync V2) and verified that meta info is removed from profile/Default/Bookmarks and bookmarks retained on the upgraded profile

• Verified that Brave sync upgrade message is shown after upgrade to 1.12.x
  
• Verified that sync chain which was set in V1 1.11.x is not retained but bookmarks retained
• Verified that new sync chain can be created after the upgrade

---

Verification PASSED on macOS 10.15.6 x64 using the following build:

Brave | 1.12.112 Chromium: 84.0.4147.125 (Official Build) (64-bit)
-- | --
Revision | d0784639447f2e10d32ebaf9861092b20cfde286-refs/branch-heads/4147@{#1059}
OS | macOS Version 10.15.6 (Build 19G73)

• Verified STR/cases via Sync Test Plan qa-resources#172
• Verified STR/cases via Sync v2 brave-core#5294

Upgrade from v1 - Migration:

Example of profile/Default/Bookmarks on 1.11.104 CR: 84.0.4147.105 using sync v1:

{
   "checksum": "32072b965696b6131cef6fc026aae4ff",
   "roots": {
      "bookmark_bar": {
         "children": [ {
            "date_added": "13241726440621238",
            "guid": "4882bc77-dbe5-4974-8b41-44cb24d89336",
            "id": "235",
            "meta_info": {
               "object_id": "35, 120, 69, 141, 106, 48, 252, 101, 254, 88, 150, 148, 147, 54, 184, 234",
               "order": "1.0.1.1",
               "parent_object_id": "",
               "position_in_parent": "-1263695895318207126",
               "sync_timestamp": "1597252849244.033936",
               "version": "1"
            },
            "name": "Cryptocurrency Market Capitalizations | CoinMarketCap",
            "type": "url",
            "url": "https://coinmarketcap.com/"
         }, {
            "children": [ {
               "children": [ {
                  "date_added": "0",
                  "guid": "bd9443aa-539c-48b1-9c90-4c86c14632ae",
                  "id": "7",
                  "meta_info": {
                     "object_id": "53, 78, 177, 193, 173, 150, 185, 175, 105, 165, 197, 47, 237, 69, 34, 22",
                     "order": "1.0.1.2.1.1",
                     "parent_object_id": "161, 237, 12, 71, 63, 49, 236, 189, 80, 206, 227, 6, 33, 117, 155, 19",
                     "position_in_parent": "-5805588200882475148",
                     "sync_timestamp": "1597252849244.145020",
                     "version": "1"
                  },
                  "name": "KS Lessons – Stonemaier Games",
                  "type": "url",
                  "url": "https://stonemaiergames.com/kickstarter/lessons/"
               }, {
                  "date_added": "0",
                  "guid": "b51f023a-8ca9-43e2-b23c-511408309dbd",
                  "id": "8",
                  "meta_info": {
                     "object_id": "14, 133, 228, 149, 13, 201, 207, 9, 132, 66, 51, 196, 212, 138, 23, 135",
                     "order": "1.0.1.2.1.2",
                     "parent_object_id": "161, 237, 12, 71, 63, 49, 236, 189, 80, 206, 227, 6, 33, 117, 155, 19",
                     "position_in_parent": "-418993892014198229",
                     "sync_timestamp": "1597252849244.186035",
                     "version": "1"
                  },

Example of profile/Default/Bookmarks on 1.12.112 CR: 84.0.4147.125 using sync v2:

{
   "checksum": "32072b965696b6131cef6fc026aae4ff",
   "roots": {
      "bookmark_bar": {
         "children": [ {
            "date_added": "13241726440621238",
            "guid": "4882bc77-dbe5-4974-8b41-44cb24d89336",
            "id": "235",
            "name": "Cryptocurrency Market Capitalizations | CoinMarketCap",
            "type": "url",
            "url": "https://coinmarketcap.com/"
         }, {
            "children": [ {
               "children": [ {
                  "date_added": "0",
                  "guid": "bd9443aa-539c-48b1-9c90-4c86c14632ae",
                  "id": "7",
                  "name": "KS Lessons – Stonemaier Games",
                  "type": "url",
                  "url": "https://stonemaiergames.com/kickstarter/lessons/"
               }, {
                  "date_added": "0",
                  "guid": "b51f023a-8ca9-43e2-b23c-511408309dbd",
                  "id": "8",
                  "name": "Unbroken Monster Stories – Altema Games",
                  "type": "url",
                  "url": "http://altemagames.com/unbroken/unbroken-monster-stories/"
               },

Ensured that the correct infofar is being displayed once upgrading from Sync v1 to Sync v2 as per the following:

[LaurenWags]

A list of all sync and/or fixed-with-sync-v2 issues in the 1.12.x milestone can be found here: https://github.com/brave/brave-browser/issues?q=is%3Aissue+milestone%3A%221.12.x+-+Release%22+label%3Afeature%2Fsync+is%3Aclosed