Web: Make switched methods all be non-virtual, more web-dependent code,

added a few more HLSL flag tests.  This was mostly focused on the SPV generator.
Saves about 17K.

glslang/MachineIndependent/reflection.cpp

@@ -1085,6 +1085,7 @@ void TReflection::buildAttributeReflection(EShLanguage stage, const TIntermediat
 // build counter block index associations for buffers
 void TReflection::buildCounterIndices(const TIntermediate& intermediate)
 {
+#ifdef ENABLE_HLSL
     // search for ones that have counters
     for (int i = 0; i < int(indexToUniformBlock.size()); ++i) {
         const TString counterName(intermediate.addCounterBufferName(indexToUniformBlock[i].name).c_str());
@@ -1093,6 +1094,7 @@ void TReflection::buildCounterIndices(const TIntermediate& intermediate)
         if (index >= 0)
             indexToUniformBlock[i].counterIndex = index;
     }
+#endif
 }
 
 // build Shader Stages mask for all uniforms