Revert of Turned on SkSL->GLSL compiler

src/sksl/SkSLIRGenerator.h

Index: src/sksl/SkSLIRGenerator.h
diff --git a/src/sksl/SkSLIRGenerator.h b/src/sksl/SkSLIRGenerator.h
index 834ed8de8169ce43ad064e4d3786dc3a780cad45..a3ff210b45978900bc56c77d24f284901c9db309 100644
--- a/src/sksl/SkSLIRGenerator.h
+++ b/src/sksl/SkSLIRGenerator.h
@@ -25,7 +25,6 @@
 #include "ast/SkSLASTIfStatement.h"
 #include "ast/SkSLASTInterfaceBlock.h"
 #include "ast/SkSLASTModifiers.h"
-#include "ast/SkSLASTModifiersDeclaration.h"
 #include "ast/SkSLASTPrefixExpression.h"
 #include "ast/SkSLASTReturnStatement.h"
 #include "ast/SkSLASTStatement.h"
@@ -40,7 +39,6 @@
 #include "ir/SkSLFunctionDefinition.h"
 #include "ir/SkSLInterfaceBlock.h"
 #include "ir/SkSLModifiers.h"
-#include "ir/SkSLModifiersDeclaration.h"
 #include "ir/SkSLSymbolTable.h"
 #include "ir/SkSLStatement.h"
 #include "ir/SkSLType.h"
@@ -63,8 +61,6 @@
     std::unique_ptr<FunctionDefinition> convertFunction(const ASTFunction& f);
     std::unique_ptr<Statement> convertStatement(const ASTStatement& statement);
     std::unique_ptr<Expression> convertExpression(const ASTExpression& expression);
-    std::unique_ptr<ModifiersDeclaration> convertModifiersDeclaration(
-                                                                  const ASTModifiersDeclaration& m);
 
 private:
     void pushSymbolTable();