Enable unused param checking for public includes.

include/ports/SkFontConfigInterface.h

Index: include/ports/SkFontConfigInterface.h
diff --git a/include/ports/SkFontConfigInterface.h b/include/ports/SkFontConfigInterface.h
index c596267db415001668c6d390f6391a1b7a0ddbdc..7a77b16e35c7f77952de917062dd782c00a71ab2 100644
--- a/include/ports/SkFontConfigInterface.h
+++ b/include/ports/SkFontConfigInterface.h
@@ -105,8 +105,8 @@ public:
     // New APIS, which have default impls for now (which do nothing)
 
     virtual SkDataTable* getFamilyNames() { return SkDataTable::NewEmpty(); }
-    virtual bool matchFamilySet(const char inFamilyName[],
-                                SkString* outFamilyName,
+    virtual bool matchFamilySet(const char[] /*inFamilyName*/,
+                                SkString* /*outFamilyName*/,
                                 SkTArray<FontIdentity>*) {
         return false;
     }