Sync: don't send record to sync cloud if bookmark metadata has changed

[AlexeyBarabash]

Description

Currently if bookmark metadata is changed, sync record UPDATED is sent to sync with all fields unchanged. Metadata of bookmark can be updated in 3 cases:

1. Our sync operations
2. Chromium sync operations
3. Chromium bookmarks api for extensions
4. Bookmark url is visited
   We are not interested in any of these operations, so this should be removed.

Steps to Reproduce

1. Create chain brave-core1 <=> brave-core2
2. On brave-core1 visit duckduckgo.com, bookmark it and close the tab
3. Wait for this bookmark appear on brave-core2
4. On brave-core1 open chrome://inspect/#extensions => inspect link under Brave Sync => console
5. On brave-core1 open duckduckgo.com from bookmarks

Actual result:

6. See send sync record in console with `"action":1` in ~ 1 minute like

"send-sync-records" category_name="BOOKMARKS" records=[
{"action":1,
"bookmark":{
"hideInToolbar":false,
"isFolder":false,
"order":"1.0.0.1",
"site":{
"creationTime":0,
"customTitle":"DuckDuckGo — Privacy, simplified.",
"favicon":"https://duckduckgo.com/favicon.ico",
"lastAccessedTime":0,
"location":"https://duckduckgo.com/",
"title":"DuckDuckGo — Privacy, simplified."},
"parentFolderObjectId":{}},
"deviceId":{"0":0},
"objectData":"bookmark",
"objectId":{"0":57,"1":34,"2":27,"3":239,"4":42,"5":5,"6":222,"7":5,"8":36,"9":60,"10":109,"11":50,"12":160,"13":200,"14":177,"15":125},
"syncTimestamp":1549657807005.618}]

Expected result:

6. No send record  in console with `"action":1` in ~ 1 minute

Reproduces how often:

Easily

Brave version (brave://version info)

Brave	0.61.17 Chromium: 72.0.3626.81 (Official Build) dev(64-bit)
Revision	ac8b982e05014492d1bd7d317628a4f22a97ffa0-refs/branch-heads/3626@{#796}
OS	Linux

Reproducible on current release:

• Does it reproduce on brave-browser dev/beta builds? Yes

[btlechowski]

Verification passed on

Brave	0.61.38 Chromium: 73.0.3683.39 (Official Build) beta (64-bit)
Revision	cc53b0e12fcaf42e4bab8d6c23bd4fb7aae99f6c-refs/branch-heads/3683@{#413}
OS	Windows 7 Service Pack 1 Build 7601.24312

Used test plan from brave/brave-core#1636

Verification passed on

Brave	0.61.41 Chromium: 73.0.3683.39 (Official Build) beta (64-bit)
Revision	cc53b0e12fcaf42e4bab8d6c23bd4fb7aae99f6c-refs/branch-heads/3683@{#413}
OS	Linux mint

Verified the test plan from brave/brave-core#1636

Verified passed with

Brave	0.61.48 Chromium: 73.0.3683.56 (Official Build) beta(64-bit)
Revision	303af44e2f2948869279f120021c778855d76ead-refs/branch-heads/3683@{#653}
OS	Mac OS X

• Verified test plan from Sync ignore metadata changes brave-core#1636