Upgrade from Chromium 91.0.4472.57 to Chromium 91.0.4472.70.

[mkarolin]

Minor Chromium bump.

https://chromium.googlesource.com/chromium/src/+log/91.0.4472.57..91.0.4472.70?pretty=fuller&n=10000

QA tests:

Check branding items
Check for version bump

Additional checks:

No specific code changes in Brave (only line number changes in patches).

[LaurenWags]

@brave/legacy_qa please test "Desktop Affected Areas" listed in #14848 (comment)

[LaurenWags]

Verification in progress with

Brave | 1.25.66 Chromium: 91.0.4472.70 (Official Build) (x86_64)
-- | --
Revision | fe095368270a32c92959403754bf6fd357dd9953-refs/branch-heads/4472@{#1172}
OS | macOS Version 10.15.7 (Build 19H1030)

Verified "Desktop Affected Areas" listed under #14848 (comment)

Confirmed the version number displays in UI

Confirmed components did not show "Update Error"/seem to have issues updating

Example	Example

Spot checked brave://settings and brave://extensions to confirm UI looked as expected

Example	Example

Confirmed the page info bubble displayed as expected

Example	Example	Example

Confirmed the profile avatar button displayed as expected when there was more than one profile

Example	Example

Confirmed ad notifications are still received as expected.

Also confirmed that I am rewarded for the ad notification views.
Confirmed system ad notifications are used, not custom ad notifications.

Example	Example	Example

---

Verification passed on

Brave	1.25.66 Chromium: 91.0.4472.70 (Official Build) (64-bit)
Revision	fe095368270a32c92959403754bf6fd357dd9953-refs/branch-heads/4472@{#1172}
OS	Ubuntu 18.04 LTS

Verified "Desktop Affected Areas" listed under #14848 (comment)

Confirmed the version number displays in UI

Confirmed components did not show "Update Error"/seem to have issues updating

Spot checked brave://settings and brave://extensions to confirm UI looked as expected

Example	Example

Confirmed the page info bubble displayed as expected

Confirmed the profile avatar button displayed as expected when there was more than one profile

Confirmed ad notifications are still received as expected.

Also confirmed that I am rewarded for the ad notification views.
Confirmed system ad notifications are used, not custom ad notifications.

Example	Example	Example

---

Verification passed on

<!--StartFragment-->
Brave | 1.25.66 Chromium: 91.0.4472.70&nbsp;(Official Build)&nbsp;(64-bit)
-- | --
Revision | fe095368270a32c92959403754bf6fd357dd9953-refs/branch-heads/4472@{#1172}
OS | Windows&nbsp;10 OS Version 2004 (Build 19041.985)

<!--EndFragment-->

Verified "Desktop Affected Areas" listed under #14848 (comment)

Confirmed the version number displays in UI

Example	Example

Confirmed components did not show "Update Error"/seem to have issues updating

Example	Example

Spot checked brave://settings and brave://extensions to confirm UI looked as expected

Example	Example

Confirmed the page info bubble displayed as expected

Example	Example	Example

Confirmed the profile avatar button displayed as expected when there was more than one profile

Example	Example

Confirmed ad notifications are still received as expected.

Also confirmed that I am rewarded for the ad notification views.
Confirmed system ad notifications are used, not custom ad notifications.

Example	Example	Example

[srirambv]

Verification passed on the following devices running 1.25.66 x64 build

Version number display in UI

About Brave

OnePlus 6T(Android 10)	Samsung Tab A (Android 10)

chrome://version

OnePlus 6T(Android 10)	Samsung Tab A (Android 10)

Components update

OnePlus 6T(Android 10)	Samsung Tab A (Android 10)