Perform CheckMinSdkVersion for java_sdk_library.

In a follow up, apex would expect that any module that implements
ModuleWithMinSdkVersionCheck to have performed appropate checks on
min_sdk_version, to allow relaxing some of the existing conditions.

This change moves the responsibility of checking min_sdk_version
of java_sdk_library to java_sdk_library itself.

Bug: 205923322
Test: presubmit
Change-Id: I79b5a1fc34098fff60221e416db6e6e69e01f531
diff --git a/java/sdk_library.go b/java/sdk_library.go
index 3065d57..fec0000 100644
--- a/java/sdk_library.go
+++ b/java/sdk_library.go
@@ -1129,6 +1129,20 @@
 	return generatedScopes
 }
 
+func (module *SdkLibrary) CheckMinSdkVersion(ctx android.ModuleContext) {
+	android.CheckMinSdkVersion(ctx, module.MinSdkVersion(ctx).ApiLevel, func(c android.ModuleContext, do android.PayloadDepsCallback) {
+		ctx.WalkDeps(func(child android.Module, parent android.Module) bool {
+			isExternal := !module.depIsInSameApex(ctx, child)
+			if am, ok := child.(android.ApexModule); ok {
+				if !do(ctx, parent, am, isExternal) {
+					return false
+				}
+			}
+			return !isExternal
+		})
+	})
+}
+
 type sdkLibraryComponentTag struct {
 	blueprint.BaseDependencyTag
 	name string
@@ -1214,6 +1228,10 @@
 }
 
 func (module *SdkLibrary) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+	if proptools.String(module.deviceProperties.Min_sdk_version) != "" {
+		module.CheckMinSdkVersion(ctx)
+	}
+
 	module.generateCommonBuildActions(ctx)
 
 	// Only build an implementation library if required.
@@ -2605,12 +2623,12 @@
 
 func (module *sdkLibraryXml) AndroidMkEntries() []android.AndroidMkEntries {
 	if module.hideApexVariantFromMake {
-		return []android.AndroidMkEntries{android.AndroidMkEntries{
+		return []android.AndroidMkEntries{{
 			Disabled: true,
 		}}
 	}
 
-	return []android.AndroidMkEntries{android.AndroidMkEntries{
+	return []android.AndroidMkEntries{{
 		Class:      "ETC",
 		OutputFile: android.OptionalPathForPath(module.outputFilePath),
 		ExtraEntries: []android.AndroidMkExtraEntriesFunc{