Droiddoc can accept logtags as input sources

Bug: 135922046
Test: m
Merged-In: I3fcdc751c91bd762a3fb19b74c1652be1c7ff115
Change-Id: I3fcdc751c91bd762a3fb19b74c1652be1c7ff115
diff --git a/java/droiddoc.go b/java/droiddoc.go
index 9956270..b474948 100644
--- a/java/droiddoc.go
+++ b/java/droiddoc.go
@@ -474,6 +474,7 @@
 	return strings.Join(flags, " "), deps
 }
 
+// TODO: remove the duplication between this and the one in gen.go
 func (j *Javadoc) genSources(ctx android.ModuleContext, srcFiles android.Paths,
 	flags droiddocBuilderFlags) android.Paths {
 
@@ -487,6 +488,9 @@
 		case ".sysprop":
 			javaFile := genSysprop(ctx, srcFile)
 			outSrcFiles = append(outSrcFiles, javaFile)
+		case ".logtags":
+			javaFile := genLogtags(ctx, srcFile)
+			outSrcFiles = append(outSrcFiles, javaFile)
 		default:
 			outSrcFiles = append(outSrcFiles, srcFile)
 		}