Revert "Rename DexJar interface method to DexJarBuildPath."

This reverts commit 562c240185dd4adcbdb75d2924c69657f6ac7cff.

Reason for revert: breaks `lunch full-eng && m checkbuild`.

Change-Id: Id7c7d6240d98afaf8edd49b6c96cd05534b784cc
diff --git a/java/app.go b/java/app.go
index fb02c99..a45ab6f 100755
--- a/java/app.go
+++ b/java/app.go
@@ -1882,7 +1882,7 @@
 	if !ctx.Config().UnbundledBuild() {
 		ctx.VisitDirectDepsWithTag(usesLibTag, func(m android.Module) {
 			if lib, ok := m.(Dependency); ok {
-				if dexJar := lib.DexJarBuildPath(); dexJar != nil {
+				if dexJar := lib.DexJar(); dexJar != nil {
 					usesLibPaths[ctx.OtherModuleName(m)] = dexJar
 				} else {
 					ctx.ModuleErrorf("module %q in uses_libs or optional_uses_libs must produce a dex jar, does it have installable: true?",