Download bar can now be closed when download is in progress

[jasonrsadler]

Fixes : #11923

Submitter Checklist:

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Ran git rebase -i to squash commits (if needed).
• Tagged reviewers and labelled the pull request as needed.
• Request a security/privacy review as needed. (Ask a Brave employee to help if you cannot access this document.)

Test Plan:

1. Launch Browser
2. Open https://download.fedoraproject.org/pub/fedora/linux/releases/27/Workstation/x86_64/iso/Fedora-Workstation-Live-x86_64-27-1.6.iso
3. Choose save location as desktop
4. Verify download bar shows
5. Close download bar
6. Verify download bar does not re-open

Reviewer Checklist:

• Request a security/privacy review as needed if one was not already requested.

Tests

• Adequate test coverage exists to prevent regressions
• Tests should be independent and work correctly when run individually or as a suite ref
• New files have MPL2 license header

[jasonrsadler]

Try to add label PR/needs-QA-attention
Don't see where to add

[codecov-io]

Codecov Report

Merging #13040 into master will decrease coverage by 0.04%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master   #13040      +/-   ##
==========================================
- Coverage   56.25%   56.21%   -0.05%     
==========================================
  Files         280      280              
  Lines       27517    27520       +3     
  Branches     4486     4486              
==========================================
- Hits        15480    15470      -10     
- Misses      12037    12050      +13

Flag	Coverage Δ
#unittest	56.21% <0%> (-0.05%)	⬇️

Impacted Files	Coverage Δ
app/filtering.js	17.92% <0%> (-0.12%)	⬇️
js/stores/appStoreRenderer.js	91.66% <0%> (-8.34%)	⬇️
app/renderer/components/reduxComponent.js	84.61% <0%> (-6.16%)	⬇️
js/stores/windowStore.js	27.69% <0%> (-0.3%)	⬇️
...erer/components/preferences/payment/ledgerTable.js	87.75% <0%> (-0.07%)	⬇️

[bsclifton]

Code works great! I rebased and squashed your commits (code is still the same). Great job on this 😄 👍

[jasonrsadler]

Awsome. Thanks.

…

On Thu, Feb 8, 2018 at 3:57 PM, Brian Clifton ***@***.***> wrote: Merged #13040 <#13040>. — You are receiving this because you were assigned. Reply to this email directly, view it on GitHub <#13040 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AYJx84C4jI2KEpewl9EqGdWQCJYUl4g1ks5tS1_HgaJpZM4R7WG3> .