refactored SkSL VarDeclaration handling

src/sksl/SkSLIRGenerator.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
  
 #ifndef SKSL_IRGENERATOR
 #define SKSL_IRGENERATOR
 
@@ skipping 38 matching lines @@
 
 /**
  * Performs semantic analysis on an abstract syntax tree (AST) and produces the corresponding 
  * (unoptimized) intermediate representation (IR).
  */
 class IRGenerator {
 public:
     IRGenerator(const Context* context, std::shared_ptr<SymbolTable> root, 
                 ErrorReporter& errorReporter);
 
-    std::unique_ptr<VarDeclaration> convertVarDeclaration(const ASTVarDeclaration& decl, 
-                                                          Variable::Storage storage);
+    std::unique_ptr<VarDeclarations> convertVarDeclarations(const ASTVarDeclarations& decl, 
+                                                            Variable::Storage storage);
     std::unique_ptr<FunctionDefinition> convertFunction(const ASTFunction& f);
     std::unique_ptr<Statement> convertStatement(const ASTStatement& statement);
     std::unique_ptr<Expression> convertExpression(const ASTExpression& expression);
 
 private:
     void pushSymbolTable();
     void popSymbolTable();
 
     const Type* convertType(const ASTType& type);
     std::unique_ptr<Expression> call(Position position, 
@@ skipping 43 matching lines @@
     std::shared_ptr<SymbolTable> fSymbolTable;
     ErrorReporter& fErrors;
 
     friend class AutoSymbolTable;
     friend class Compiler;
 };
 
 }
 
 #endif