Revert "Setting Java 11 as the default version"

Revert submission 1944928-default-java11

Reason for revert: Post-submit failures
Reverted Changes:
Ia9a0aa2a4:Setting Java 11 as the default version
Ibf5d10521:Setting Java 11 as the default version

Fixes: 215504708
Fixes: 215502091
Fixes: 215502091
Change-Id: I2f9866deff41406aede24758f6eda5e5808c7f29

java/base.go

@@ -122,6 +122,14 @@ type CommonProperties struct {
 		Javacflags []string
 	}
 
+	Openjdk11 struct {
+		// List of source files that should only be used when passing -source 1.9 or higher
+		Srcs []string `android:"path"`
+
+		// List of javac flags that should only be used when passing -source 1.9 or higher
+		Javacflags []string
+	}
+
 	// When compiling language level 9+ .java code in packages that are part of
 	// a system module, patch_module names the module that your sources and
 	// dependencies should be patched into. The Android runtime currently
@@ -968,6 +976,9 @@ func (j *Module) compile(ctx android.ModuleContext, aaptSrcJar android.Path) {
 	if flags.javaVersion.usesJavaModules() {
 		j.properties.Srcs = append(j.properties.Srcs, j.properties.Openjdk9.Srcs...)
 	}
+	if ctx.Config().TargetsJava11() {
+		j.properties.Srcs = append(j.properties.Srcs, j.properties.Openjdk11.Srcs...)
+	}
 
 	srcFiles := android.PathsForModuleSrcExcludes(ctx, j.properties.Srcs, j.properties.Exclude_srcs)
 	if hasSrcExt(srcFiles.Strings(), ".proto") {