java: add default libraries for device builds

Add implicit libraries core-libart, core-junit, ext, and framework
to device java builds.

Change-Id: I8b4e1e54bfd4bc89fbcd211ab8da6bbcf092c523
diff --git a/java/java.go b/java/java.go
index 2a04f70..6ad5307 100644
--- a/java/java.go
+++ b/java/java.go
@@ -154,6 +154,8 @@
 	}
 }
 
+var defaultJavaLibraries = []string{"core-libart", "core-junit", "ext", "framework"}
+
 func (j *javaBase) AndroidDynamicDependencies(ctx common.AndroidDynamicDependerModuleContext) []string {
 	var deps []string
 
@@ -162,6 +164,9 @@
 		if bootClasspath != "" {
 			deps = append(deps, bootClasspath)
 		}
+		if ctx.Device() && j.properties.Sdk_version == "" {
+			deps = append(deps, defaultJavaLibraries...)
+		}
 	}
 	deps = append(deps, j.properties.Java_libs...)
 	deps = append(deps, j.properties.Java_static_libs...)