Have ConvertWBp2build use Bp2buildMutatorContext

This no-op refactoring facilitates some upcoming functional changes for
"bp2build allowlist v2". The work requires that the bp2build conversion
mutator be changed from a TopDown mutator to a BottomUp mutator.
Refactoring all bp2build-related methods so that they use Bp2buildMutatorContext
makes it easier to make this functional change without touching tens of
files and multiple projects.

Bug: 285631638
Test: m bp2build
Change-Id: I3d1ef3064146e959c6f0dc315350fc9764bf2bd2
diff --git a/aidl_library/aidl_library.go b/aidl_library/aidl_library.go
index 7449d67..2c0aef7 100644
--- a/aidl_library/aidl_library.go
+++ b/aidl_library/aidl_library.go
@@ -64,7 +64,7 @@
 	Deps                bazel.LabelListAttribute
 }
 
-func (lib *AidlLibrary) ConvertWithBp2build(ctx android.TopDownMutatorContext) {
+func (lib *AidlLibrary) ConvertWithBp2build(ctx android.Bp2buildMutatorContext) {
 	srcs := bazel.MakeLabelListAttribute(
 		android.BazelLabelForModuleSrc(
 			ctx,