Cleanup: Delete sk_tools::make_filepath() in favor of SkOSPath::SkPathJoin().

tools/picture_utils.h

Index: tools/picture_utils.h
diff --git a/tools/picture_utils.h b/tools/picture_utils.h
index 2e1af7b78c1bb75ff012b7e3abd87aa01bf98d95..b2a387de62c962f37b018fa2daa13384460a9a20 100644
--- a/tools/picture_utils.h
+++ b/tools/picture_utils.h
@@ -33,11 +33,6 @@ namespace sk_tools {
      */
     void replace_char(SkString* str, const char oldChar, const char newChar);
 
-    // Creates a posix style filepath by concatenating name onto dir with a
-    // forward slash into path.
-    // TODO(epoger): delete in favor of SkOSPath::SkPathJoin()?
-    void make_filepath(SkString* path, const SkString&, const SkString& name);
-
     // Returns true if the string ends with %
     bool is_percentage(const char* const string);