Prevent dynamically created java_api_contribution from inheriting

parent modules' visibility

By default, dynamically created module inherits the parent module's
visibility. When the parent module's visibility is set to
"//visibility:private" or has any other specified visibility
restrictions in the module definition,  the created
java_api_contribution module is not visible to java_api_library.
Thus, override any inherited visibility properties and set the visiblity
of the created java_api_contribution module to public.

Test: m
Change-Id: I5db60a5a1800e2ae28c9650eeb9a2f1c3b4f8989

java/droidstubs.go

@@ -878,11 +878,13 @@ func (d *Droidstubs) createApiContribution(ctx android.DefaultableHookContext) {
 		Name        *string
 		Api_surface *string
 		Api_file    *string
+		Visibility  []string
 	}{}
 
 	props.Name = proptools.StringPtr(d.Name() + ".api.contribution")
 	props.Api_surface = api_surface
 	props.Api_file = api_file
+	props.Visibility = []string{"//visibility:override", "//visibility:public"}
 
 	ctx.CreateModule(ApiContributionFactory, &props)
 }