Moved the code to combine interpolation and stoarge qualifiers to the parse helper.

TRAC #23745

Signed-off-by: Nicolas Capens
Signed-off-by: Shannon Woods
diff --git a/src/compiler/ParseHelper.h b/src/compiler/ParseHelper.h
index 9910b21..8908e1c 100644
--- a/src/compiler/ParseHelper.h
+++ b/src/compiler/ParseHelper.h
@@ -151,6 +151,8 @@
     TLayoutQualifier parseLayoutQualifier(const TString &qualifierType, const TSourceLoc& qualifierTypeLine);
     TLayoutQualifier parseLayoutQualifier(const TString &qualifierType, const TSourceLoc& qualifierTypeLine, const TString &intValueString, int intValue, const TSourceLoc& intValueLine);
     TLayoutQualifier joinLayoutQualifiers(TLayoutQualifier leftQualifier, TLayoutQualifier rightQualifier);
+    TPublicType joinInterpolationQualifiers(const TSourceLoc &interpolationLoc, TQualifier interpolationQualifier,
+                                            const TSourceLoc &storageLoc, TQualifier storageQualifier);
 
     // Performs an error check for embedded struct declarations.
     // Returns true if an error was raised due to the declaration of