Dexpreopt standalone system server jars.

Standalone system server jars are dynamically loaded by system server
using a `PathClassLoader` whose parent is `SYSTEMSERVERCLASSPATH`. They
are listed in `PRODUCT_STANDALONE_SYSTEM_SERVER_JARS` and
`PRODUCT_APEX_STANDALONE_SYSTEM_SERVER_JARS` in Makefile. We need to
dexpreopt them to achieve better performance.

Bug: 203198541
Test: m nothing
Test: -
  1. Add a standalone system server jar (e.g., by patching
     aosp/1906158)
  2. Build a system image.
  3. See the odex and vdex files generated in
     $ANDROID_PRODUCT_OUT/system/framework/oat/
  4. Flash the image to a device.
  5. Run `atest art_standalone_dexpreopt_tests`.
Change-Id: I358a62d34989c5c8eba12e18fe6167e0b72ff69d
diff --git a/java/dexpreopt_check.go b/java/dexpreopt_check.go
index 565901d..fade066 100644
--- a/java/dexpreopt_check.go
+++ b/java/dexpreopt_check.go
@@ -72,9 +72,10 @@
 		return
 	}
 
-	systemServerJars := dexpreopt.AllSystemServerJars(ctx, global)
+	// TODO(b/203198541): Check all system server jars.
+	systemServerJars := global.AllSystemServerClasspathJars(ctx)
 	for _, jar := range systemServerJars.CopyOfJars() {
-		dexLocation := dexpreopt.GetSystemServerDexLocation(global, jar)
+		dexLocation := dexpreopt.GetSystemServerDexLocation(ctx, global, jar)
 		odexLocation := dexpreopt.ToOdexPath(dexLocation, targets[0].Arch.ArchType)
 		odexPath := getInstallPath(ctx, odexLocation)
 		vdexPath := getInstallPath(ctx, pathtools.ReplaceExtension(odexLocation, "vdex"))