Add support for using prebuilt libraries as static dependencies

Extract files out of prebuilt libraries and create list files
for classes and resources in order to allow including them in
other jars.

Change-Id: I9269d1fd6e0f570811a00bf319098ac1f7cdc816

java/java.go

@@ -361,7 +361,8 @@ type JavaPrebuilt struct {
 		Srcs []string
 	}
 
-	classpathFile string
+	classpathFile                   string
+	classJarSpecs, resourceJarSpecs []jarSpec
 }
 
 func (j *JavaPrebuilt) GenerateAndroidBuildActions(ctx common.AndroidModuleContext) {
@@ -369,7 +370,15 @@ func (j *JavaPrebuilt) GenerateAndroidBuildActions(ctx common.AndroidModuleConte
 		ctx.ModuleErrorf("expected exactly one jar in srcs")
 		return
 	}
-	j.classpathFile = filepath.Join(common.ModuleSrcDir(ctx), j.properties.Srcs[0])
+	prebuilt := filepath.Join(common.ModuleSrcDir(ctx), j.properties.Srcs[0])
+
+	classJarSpec, resourceJarSpec := TransformPrebuiltJarToClasses(ctx, prebuilt)
+
+	j.classpathFile = prebuilt
+	j.classJarSpecs = []jarSpec{classJarSpec}
+	j.resourceJarSpecs = []jarSpec{resourceJarSpec}
+
+	ctx.InstallFileName("framework", ctx.ModuleName()+".jar", j.classpathFile)
 }
 
 var _ JavaDependency = (*JavaPrebuilt)(nil)
@@ -379,11 +388,11 @@ func (j *JavaPrebuilt) ClasspathFile() string {
 }
 
 func (j *JavaPrebuilt) ClassJarSpecs() []jarSpec {
-	return nil
+	return j.classJarSpecs
 }
 
 func (j *JavaPrebuilt) ResourceJarSpecs() []jarSpec {
-	return nil
+	return j.resourceJarSpecs
 }
 
 func JavaPrebuiltFactory() (blueprint.Module, []interface{}) {