autofill: remove unnecessary include from browser_test_base.h

This is extracted from https://crrev.com/c/5280997 to reduce compile
time of some test files.

content/public/test/browser_test_base.h is the file removing
unnecessary header.

Bug: b/324519459
Change-Id: Ic6b8e4328f6be3161dd3f09711451c8578032ef4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5300036
Owners-Override: John Abd-El-Malek <jam@chromium.org>
Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1262233}
NOKEYCHECK=True
GitOrigin-RevId: a47d7859c400272c6e3055f1225d297ab94031e2
1 file changed