Adding option to include sources only for Java 11 builds

Bug: 207852002
Test: m
Test: EXPERIMENTAL_TARGET_JAVA_VERSION_11=true m
Change-Id: I554a79798ea7f1dd4a96b09f761090f83a009cb4

java/sdk_library.go

@@ -1392,6 +1392,10 @@ func (module *SdkLibrary) createStubsLibrary(mctx android.DefaultableHookContext
 			Srcs       []string
 			Javacflags []string
 		}
+		Openjdk11 struct {
+			Srcs       []string
+			Javacflags []string
+		}
 		Dist struct {
 			Targets []string
 			Dest    *string
@@ -1418,6 +1422,8 @@ func (module *SdkLibrary) createStubsLibrary(mctx android.DefaultableHookContext
 	}
 	props.Openjdk9.Srcs = module.properties.Openjdk9.Srcs
 	props.Openjdk9.Javacflags = module.properties.Openjdk9.Javacflags
+	props.Openjdk11.Srcs = module.properties.Openjdk11.Srcs
+	props.Openjdk11.Javacflags = module.properties.Openjdk11.Javacflags
 	// We compile the stubs for 1.8 in line with the main android.jar stubs, and potential
 	// interop with older developer tools that don't support 1.9.
 	props.Java_version = proptools.StringPtr("1.8")