Never allow java_library_host with no_standard_libs: true

This combination makes no sense.

Bug: 134566750
Test: m droid
Change-Id: Ib37bbac165395c003d23225e0469ba60fa6a56ea

android/neverallow.go

@@ -52,6 +52,7 @@ func createNeverAllows() []*rule {
 	rules = append(rules, createTrebleRules()...)
 	rules = append(rules, createLibcoreRules()...)
 	rules = append(rules, createJavaDeviceForHostRules()...)
+	rules = append(rules, createJavaLibraryHostRules()...)
 	return rules
 }
 
@@ -127,6 +128,15 @@ func createJavaDeviceForHostRules() []*rule {
 	}
 }
 
+func createJavaLibraryHostRules() []*rule {
+	return []*rule{
+		neverallow().
+			moduleType("java_library_host").
+			with("no_standard_libs", "true").
+			because("no_standard_libs makes no sense with java_library_host"),
+	}
+}
+
 func neverallowMutator(ctx BottomUpMutatorContext) {
 	m, ok := ctx.Module().(Module)
 	if !ok {

android/neverallow_test.go

@@ -180,6 +180,18 @@ var neverallowTests = []struct {
 				}`),
 		},
 	},
+	// java_library_host rule tests
+	{
+		name: "java_library_host with no_standard_libs: true",
+		fs: map[string][]byte{
+			"libcore/Blueprints": []byte(`
+				java_library_host {
+					name: "inside_core_libraries",
+					no_standard_libs: true,
+				}`),
+		},
+		expectedError: "module \"inside_core_libraries\": violates neverallow",
+	},
 }
 
 func TestNeverallow(t *testing.T) {
@@ -208,6 +220,7 @@ func testNeverallow(t *testing.T, config Config, fs map[string][]byte) (*TestCon
 	ctx := NewTestContext()
 	ctx.RegisterModuleType("cc_library", ModuleFactoryAdaptor(newMockCcLibraryModule))
 	ctx.RegisterModuleType("java_library", ModuleFactoryAdaptor(newMockJavaLibraryModule))
+	ctx.RegisterModuleType("java_library_host", ModuleFactoryAdaptor(newMockJavaLibraryModule))
 	ctx.RegisterModuleType("java_device_for_host", ModuleFactoryAdaptor(newMockJavaLibraryModule))
 	ctx.PostDepsMutators(registerNeverallowMutator)
 	ctx.Register()

java/sdk_test.go

@@ -136,13 +136,6 @@ func TestClasspath(t *testing.T) {
 			bootclasspath: []string{"jdk8/jre/lib/jce.jar", "jdk8/jre/lib/rt.jar"},
 			classpath:     []string{},
 		},
-		{
-			name:       "host nostdlib",
-			moduleType: "java_library_host",
-			host:       android.Host,
-			properties: `no_standard_libs: true`,
-			classpath:  []string{},
-		},
 		{
 
 			name:          "host supported default",