Android - Download background images via CRX

[wchen342]

Description

Use downloadable background component for Android.

Steps to reproduce

1. Launch browser
2. Check NTP Background Images component is loaded via brave://components (current version is 1.0.3)
3. If component is not yet loaded, same bg image will be displayed
4. If component is loaded, Every NTP will have different bg images
5. If NTP SI is available on current region, NTP will show SI and BG images
6. If NTP SI is not available on current region, NTP will show BG images always

Actual result

Expected result

Issue reproduces how often

Version/Channel Information:

• Can you reproduce this issue with the current Play Store version?
• Can you reproduce this issue with the current Play Store Beta version?
• Can you reproduce this issue with the current Play Store Nightly version?

Device details

• Install type (ARM, x86):
• Device type (Phone, Tablet, Phablet):
• Android version:

Brave version

Website problems only

• Does the issue resolve itself when disabling Brave Shields?
• Does the issue resolve itself when disabling Brave Rewards?
• Is the issue reproducible on the latest version of Chrome?

Additional information

[bsclifton]

Desktop is covered in #10278

[srirambv]

Verification passed on Samsung Tab A with Android 10 running 1.31.86 x64 build

• Verified on clean install when the component is not downloaded only one image is shown on all the tabs
• Verified when component is not downloaded shows 0.0.0.0 for component version
• Verified when component is not downloaded same image is shown for all new tabs
• Verified when component is successfully downloaded new tabs fetch different images but already opened tabs retain the same image. Reloading doesn't update it
• Verified when the region has a SI active, every 4th tab shows a SI and every tab shows a new image
• Verified disabling NTP images on 1.30.89 and upgrading 1.31.86, still downloads the component. Once NTP images are enabled, new tabs starts getting different images including SI when applicable

Component Error	Component Downloaded

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Verification passed on Oppo Reno 5 with Android 11 running 1.31.86 x64 build

• Verified on clean install when the component is not downloaded only one image is shown on all the tabs
• Verified when component is not downloaded shows 0.0.0.0 for component version
• Verified when component is not downloaded same image is shown for all new tabs
• Verified when component is successfully downloaded new tabs fetch different images but already opened tabs retain the same image. Reloading doesn't update it
• Verified when the region has a SI active, every 4th tab shows a SI and every tab shows a new image
• Verified disabling NTP images on 1.30.89 and upgrading 1.31.86, still downloads the component. Once NTP images are enabled, new tabs starts getting different images including SI when applicable

Component Error	Component Downloaded	Tab Tray