re-pin of tab can take multiple tries for tab to be pinned again

[LaurenWags]

Description

Re-pinning a tab doesn't work on the first try. Need to try at least twice (sometimes more) to get tab to pin again.

Steps to Reproduce

1. Launch 0.22.103 with a clean profile
2. Open several tabs in the first window: amazon.com, brianbondy.com, clifton.io, duckduckgo.com, ecosia.org, facebook.com, google.com (this will be referred to as window 1)
3. Drag the clifton tab out into its own window (this will be referred to as window 2)
4. Go back to window 1 and drag another tab, ecosia, to its own window. (this will be referred to as window 3)
5. Drag the ecosia tab from window 3 into window 2 with the clifton tab (window 2 now has 2 tabs)
6. Go back to window 1 and pin DDG
7. Go to window 2 and unpin DDG
8. Right click on DDG tab and try to pin again.

Actual result:
DDG is not re-pinned. Need to try at least twice (sometimes more) to get tab to pin again.

https://drive.google.com/file/d/1CrhwQue8-yF8D5Rx7t7qXLXRQ1Lc0Icw/view?usp=sharing

console output: https://gist.github.com/LaurenWags/b1c7bdc2fb32400eb9ea5c87be7e0c27#file-scenario4-consoleoutput-txt
terminal output: https://gist.github.com/LaurenWags/c0bf0d1a2f4551e71df5325279263008#file-scenario4-terminaloutput-txt

Expected result:
Tab should re-pin without needing to try multiple times. Context menu should work in all open windows.

Reproduces how often:
easily

Brave Version

about:brave info:
Brave | 0.22.103
V8 | 6.5.254.41
rev | 2324f55
Muon | 6.0.0
OS Release | 16.7.0
Update Channel | Beta
OS Architecture | x64
OS Platform | macOS
Node.js | 7.9.0
Brave Sync | v1.4.2
libchromiumcontent | 65.0.3325.181

Reproducible on current live release:
no

Additional Information

Also happens if you select 'Detach' instead of drag and drop.

[petemill]

Seems resolved by object-registry WebContents ID fix in muon

[btlechowski]

Reproduced in v0.22.105 Win7 x64.
On top of that, the context menu stopped showing on one of the windows.

[LaurenWags]

@btlechowski good note about context menu - I added it to expected result so we double check that it is working in all windows.

[petemill]

Should be fixed with 0.22.108

[LaurenWags]

Verified on macOS 10.12.6 x64 using the following build:

• 0.22.109 5e4846e
• libchromiumcontent: 65.0.3325.181
• muon: 6.0.3

[GeetaSarvadnya]

Verified on Windows x64

• 0.22.702 e4a853d
• libchromiumcontent 66.0.3359.139
• muon: 6.0.7

Verified on Ubuntu 17.10 x64
0.22.703 903b8d0
libchromiumcontent 66.0.3359.139
muon: 6.0.8