Turned on SkSL->GLSL compiler

src/sksl/ir/SkSLModifiersDeclaration.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_MODIFIERDECLARATION
+#define SKSL_MODIFIERDECLARATION
+
+#include "SkSLProgramElement.h"
+#include "SkSLModifiers.h"
+
+namespace SkSL {
+
+/**
+ * A declaration that consists only of modifiers, e.g.:
+ *
+ * layout(blend_support_all_equations) out;
+ */
+struct ModifiersDeclaration : public ProgramElement {
+    ModifiersDeclaration(Modifiers modifiers)
+    : INHERITED(Position(), kModifiers_Kind)
+    , fModifiers(modifiers) {}
+
+    std::string description() const {
+        return fModifiers.description() + ";";
+    }
+
+    Modifiers fModifiers;
+
+    typedef ProgramElement INHERITED;
+};
+
+} // namespace
+
+#endif