diff --git a/java/classpath_fragment.go b/java/classpath_fragment.go
index 00e9591..2e05823 100644
--- a/java/classpath_fragment.go
+++ b/java/classpath_fragment.go
@@ -51,6 +51,10 @@
 	android.Module
 
 	classpathFragmentBase() *ClasspathFragmentBase
+
+	// ClasspathFragmentToConfiguredJarList returns android.ConfiguredJarList representation of all
+	// the jars in this classpath fragment.
+	ClasspathFragmentToConfiguredJarList(ctx android.ModuleContext) android.ConfiguredJarList
 }
 
 // ClasspathFragmentBase is meant to be embedded in any module types that implement classpathFragment;
@@ -84,24 +88,26 @@
 	maxSdkVersion int32
 }
 
-func (c *ClasspathFragmentBase) generateClasspathProtoBuildActions(ctx android.ModuleContext) {
+// Converts android.ConfiguredJarList into a list of classpathJars for each given classpathType.
+func configuredJarListToClasspathJars(ctx android.ModuleContext, configuredJars android.ConfiguredJarList, classpaths ...classpathType) []classpathJar {
+	paths := configuredJars.DevicePaths(ctx.Config(), android.Android)
+	jars := make([]classpathJar, 0, len(paths)*len(classpaths))
+	for i := 0; i < len(paths); i++ {
+		for _, classpathType := range classpaths {
+			jars = append(jars, classpathJar{
+				classpath: classpathType,
+				path:      paths[i],
+			})
+		}
+	}
+	return jars
+}
+
+func (c *ClasspathFragmentBase) generateClasspathProtoBuildActions(ctx android.ModuleContext, jars []classpathJar) {
 	outputFilename := ctx.ModuleName() + ".pb"
 	c.outputFilepath = android.PathForModuleOut(ctx, outputFilename).OutputPath
 	c.installDirPath = android.PathForModuleInstall(ctx, "etc", "classpaths")
 
-	var jars []classpathJar
-	switch c.classpathType {
-	case BOOTCLASSPATH:
-		jars = appendClasspathJar(jars, BOOTCLASSPATH, defaultBootclasspath(ctx)...)
-		jars = appendClasspathJar(jars, DEX2OATBOOTCLASSPATH, defaultBootImageConfig(ctx).getAnyAndroidVariant().dexLocationsDeps...)
-	case SYSTEMSERVERCLASSPATH:
-		jars = appendClasspathJar(jars, SYSTEMSERVERCLASSPATH, systemServerClasspath(ctx)...)
-	default:
-		// Only supported classpath fragments are BOOTCLASSPATH and SYSTEMSERVERCLASSPATH.
-		// DEX2OATBOOTCLASSPATH is a special case of BOOTCLASSPATH and is auto-generated.
-		panic(fmt.Errorf("found %v, expected either BOOTCLASSPATH or SYSTEMSERVERCLASSPATH", c.classpathType))
-	}
-
 	generatedJson := android.PathForModuleOut(ctx, outputFilename+".json")
 	writeClasspathsJson(ctx, generatedJson, jars)
 
@@ -137,19 +143,8 @@
 	android.WriteFileRule(ctx, output, content.String())
 }
 
-func appendClasspathJar(slice []classpathJar, classpathType classpathType, paths ...string) (result []classpathJar) {
-	result = append(result, slice...)
-	for _, path := range paths {
-		result = append(result, classpathJar{
-			path:      path,
-			classpath: classpathType,
-		})
-	}
-	return
-}
-
 func (c *ClasspathFragmentBase) androidMkEntries() []android.AndroidMkEntries {
-	return []android.AndroidMkEntries{android.AndroidMkEntries{
+	return []android.AndroidMkEntries{{
 		Class:      "ETC",
 		OutputFile: android.OptionalPathForPath(c.outputFilepath),
 		ExtraEntries: []android.AndroidMkExtraEntriesFunc{