Remove "Estimated" from bandwidth saved and time saved

[karenkliu]

Description

Remove "Estimated" from Brave Stats on NTP.

Steps to Reproduce

1. Open a new tab page

Actual result:

Expected result:

Reproduces how often:

Easily

Brave version (brave://version info)

Nightly

Version/Channel Information:

• Can you reproduce this issue with the current release? no
• Can you reproduce this issue with the beta channel? no
• Can you reproduce this issue with the dev channel? no
• Can you reproduce this issue with the nightly channel? yes

Other Additional Information:

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

Miscellaneous Information:

[rebron]

@0xedward Can you grab this one too. Maybe as part of this pr brave/brave-core#5630

[0xedward]

@rebron Sure, looking into it now

[0xedward]

While updating the text from "Estimated bandwidth saved" to "Bandwidth saved", I noticed the attribute name for that message is IDS_BRAVE_NEW_TAB_ESTIMATED_BANDWIDTH_SAVED. Is that something we want to replace with IDS_BRAVE_NEW_TAB_BANDWIDTH_SAVED and update all current instances of IDS_BRAVE_NEW_TAB_ESTIMATED_BANDWIDTH_SAVED to reflect that change?

[GeetaSarvadnya]

Verification passed on

Brave | 1.10.86 Chromium: 83.0.4103.61 (Official Build) (64-bit)
-- | --
Revision | 94f915a8d7c408b09cc7352161ad592299f384d2-refs/branch-heads/4103@{#561}
OS | Windows 10 OS Version 1803 (Build 17134.1006)

• Verified STR from the description, verified on both clean and upgraded profile.
  
  

• Encountered [Desktop] NTP Estimated bandwidth saved stat is not shown on clean install #9993

Verification PASSED on macOS 10.15.5 x64 Catalina using the following build:

Brave | 1.10.86 Chromium: 83.0.4103.61 (Official Build) (64-bit)
-- | --
Revision | 94f915a8d7c408b09cc7352161ad592299f384d2-refs/branch-heads/4103@{#561}
OS | macOS Version 10.15.5 (Build 19F101)

• ensured that Estimated was removed from Bandwidth saved under NTP
• ensured that stats under NTP are being updated when visiting websites
• ensured that restarting the browser doesn't reset the NTP stats
• ensured that disabling/enabling stats on NTP works without any issues
• ensured upgrading from 1.9.76 --> 1.10.86 didn't cause any issues
• ran into [Desktop] NTP Estimated bandwidth saved stat is not shown on clean install #9993 while going through the above

Verification passed on

Brave	1.10.86 Chromium: 83.0.4103.61 (Official Build) (64-bit)
Revision	94f915a8d7c408b09cc7352161ad592299f384d2-refs/branch-heads/4103@{#561}
OS	Ubuntu 18.04 LTS

• ensured that Estimated was removed from Bandwidth saved under NTP
• ensured that stats under NTP are being updated when visiting websites
• ensured that restarting the browser doesn't reset the NTP stats
• ensured that disabling/enabling stats on NTP works without any issues
• ensured upgrading from 1.9.76 --> 1.10.86 didn't cause any issues
• ran into [Desktop] NTP Estimated bandwidth saved stat is not shown on clean install #9993 while going through the above
• encountered [Desktop] NTP stats strings are not translated #9990

Polish

[rebron]

While updating the text from "Estimated bandwidth saved" to "Bandwidth saved", I noticed the attribute name for that message is IDS_BRAVE_NEW_TAB_ESTIMATED_BANDWIDTH_SAVED. Is that something we want to replace with IDS_BRAVE_NEW_TAB_BANDWIDTH_SAVED and update all current instances of IDS_BRAVE_NEW_TAB_ESTIMATED_BANDWIDTH_SAVED to reflect that change?

@0xedward No need to change above. That can stay as is.

Thanks again for the fix.