diff --git a/cc/cc.go b/cc/cc.go
index f5a1567..8e55553 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -162,13 +162,10 @@
 
 	GroupStaticLibs bool
 
+	proto            android.ProtoFlags
 	protoDeps        android.Paths
-	protoFlags       []string // Flags that apply to proto source files
-	protoOutTypeFlag string   // The output type, --cpp_out for example
-	protoOutParams   []string // Flags that modify the output of proto generated files
-	protoC           bool     // Whether to use C instead of C++
-	protoOptionsFile bool     // Whether to look for a .options file next to the .proto
-	ProtoRoot        bool
+	protoC           bool // Whether to use C instead of C++
+	protoOptionsFile bool // Whether to look for a .options file next to the .proto
 }
 
 type ObjectLinkerProperties struct {