Revert of Turned on SkSL->GLSL compiler

src/sksl/ir/SkSLIndexExpression.h

Index: src/sksl/ir/SkSLIndexExpression.h
diff --git a/src/sksl/ir/SkSLIndexExpression.h b/src/sksl/ir/SkSLIndexExpression.h
index 319e06f97dfb7e7c6dbcbfd3b76a22dd483035bf..f5b0d09c2cbffe428aacb844ed78bb5ce20a0a02 100644
--- a/src/sksl/ir/SkSLIndexExpression.h
+++ b/src/sksl/ir/SkSLIndexExpression.h
@@ -19,7 +19,7 @@
 static const Type& index_type(const Context& context, const Type& type) {
     if (type.kind() == Type::kMatrix_Kind) {
         if (type.componentType() == *context.fFloat_Type) {
-            switch (type.rows()) {
+            switch (type.columns()) {
                 case 2: return *context.fVec2_Type;
                 case 3: return *context.fVec3_Type;
                 case 4: return *context.fVec4_Type;
@@ -47,7 +47,7 @@
     : INHERITED(base->fPosition, kIndex_Kind, index_type(context, base->fType))
     , fBase(std::move(base))
     , fIndex(std::move(index)) {
-        ASSERT(fIndex->fType == *context.fInt_Type || fIndex->fType == *context.fUInt_Type);
+        ASSERT(fIndex->fType == *context.fInt_Type);
     }
 
     std::string description() const override {