Put generated/compiled graphics code in getCodeCacheDir()

A refactoring introduced a slight regression that caused compiled
shaders to be cached in the wrong directory.

Bug: 63813783
Test: Manual
Change-Id: I863e584ff1df4cda9242c64afd643a899023ee1c
diff --git a/core/java/android/app/ActivityThread.java b/core/java/android/app/ActivityThread.java
index abf48a8..35cb2f1 100644
--- a/core/java/android/app/ActivityThread.java
+++ b/core/java/android/app/ActivityThread.java
@@ -5413,8 +5413,8 @@
                     int uid = Process.myUid();
                     String[] packages = getPackageManager().getPackagesForUid(uid);
                     if (packages != null) {
-                        ThreadedRenderer.setupDiskCache(cacheDir);
-                        RenderScriptCacheDir.setupDiskCache(cacheDir);
+                        ThreadedRenderer.setupDiskCache(codeCacheDir);
+                        RenderScriptCacheDir.setupDiskCache(codeCacheDir);
                     }
                 } catch (RemoteException e) {
                     Trace.traceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER);