Revert "Compare vector icons by address, not name."

This reverts commit be7d966f20f546cfb5f04fef5871bac07ca20ff4.

Reason for revert:
LUCI Bisection has identified this change as the cause of a test failure. See the analysis: https://ci.chromium.org/ui/p/chromium/bisection/test-analysis/b/6255047466811392

Sample build with failed test: https://ci.chromium.org/b/8723183395685237841
Affected test(s):
[ninja://ash:ash_unittests/BluetoothFeaturePodControllerTest.HasCorrectMetadataWhenOff/All.0](https://ci.chromium.org/ui/test/chromium/ninja:%2F%2Fash:ash_unittests%2FBluetoothFeaturePodControllerTest.HasCorrectMetadataWhenOff%2FAll.0?q=VHash%3A09a1217d4f1b1e5e)
[ninja://ash:ash_unittests/BluetoothFeaturePodControllerTest.HasCorrectMetadataWhenOff/All.1](https://ci.chromium.org/ui/test/chromium/ninja:%2F%2Fash:ash_unittests%2FBluetoothFeaturePodControllerTest.HasCorrectMetadataWhenOff%2FAll.1?q=VHash%3A09a1217d4f1b1e5e)
[ninja://ash:ash_unittests/BluetoothFeaturePodControllerTest.HasCorrectMetadataWithMultipleDevice/All.0](https://ci.chromium.org/ui/test/chromium/ninja:%2F%2Fash:ash_unittests%2FBluetoothFeaturePodControllerTest.HasCorrectMetadataWithMultipleDevice%2FAll.0?q=VHash%3A09a1217d4f1b1e5e)
[ninja://ash:ash_unittests/BluetoothFeaturePodControllerTest.HasCorrectMetadataWithMultipleDevice/All.1](https://ci.chromium.org/ui/test/chromium/ninja:%2F%2Fash:ash_unittests%2FBluetoothFeaturePodControllerTest.HasCorrectMetadataWithMultipleDevice%2FAll.1?q=VHash%3A09a1217d4f1b1e5e)
[ninja://ash:ash_unittests/BluetoothFeaturePodControllerTest.HasCorrectMetadataWithOneDevice/All.0](https://ci.chromium.org/ui/test/chromium/ninja:%2F%2Fash:ash_unittests%2FBluetoothFeaturePodControllerTest.HasCorrectMetadataWithOneDevice%2FAll.0?q=VHash%3A09a1217d4f1b1e5e)
and 22 more ...

If this is a false positive, please report it at http://b.corp.google.com/createIssue?component=1199205&description=Analysis%3A+https%3A%2F%2Fci.chromium.org%2Fui%2Fp%2Fchromium%2Fbisection%2Ftest-analysis%2Fb%2F6255047466811392&format=PLAIN&priority=P3&title=Wrongly+blamed+https%3A%2F%2Fchromium-review.googlesource.com%2Fc%2Fchromium%2Fsrc%2F%2B%2F6236841&type=BUG

Original change's description:
> Compare vector icons by address, not name.
>
> Icons are globally unique and non-copyable, so comparing by address is
> valid, and more efficient than a string comparison.
>
> Bug: 364987728
> Change-Id: I53dfec9d4ad533532670fce2f37d2f730f131448
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6236841
> Auto-Submit: Peter Kasting <pkasting@chromium.org>
> Commit-Queue: Alex Newcomer <newcomer@chromium.org>
> Reviewed-by: Alex Newcomer <newcomer@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1418983}
>

Bug: 364987728
Change-Id: I97d677b53d017cedcda41bd502e7a2975ded289c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6253808
Reviewed-by: Taiyo Mizuhashi <taiyo@chromium.org>
Commit-Queue: Taiyo Mizuhashi <taiyo@chromium.org>
Owners-Override: Taiyo Mizuhashi <taiyo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1419082}