Make GrGLSLProgramBuilder base class for ProgramBuilder

src/gpu/glsl/GrGLSLProgramBuilder.cpp

+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "glsl/GrGLSLProgramBuilder.h"
+
+const int GrGLSLProgramBuilder::kVarsPerBlock = 8;
+
+GrGLSLProgramBuilder::GrGLSLProgramBuilder(const DrawArgs& args)
+    : fVS(this)
+    , fGS(this)
+    , fFS(this, args.fDesc->header().fFragPosKey)
+    , fStageIndex(-1)
+    , fArgs(args) {
+}
+
+void GrGLSLProgramBuilder::nameVariable(SkString* out, char prefix, const char* name, bool mangle) {
+    if ('\0' == prefix) {
+        *out = name;
+    } else {
+        out->printf("%c%s", prefix, name);
+    }
+    if (mangle) {
+        if (out->endsWith('_')) {
+            // Names containing "__" are reserved.
+            out->append("x");
+        }
+        out->appendf("_Stage%d%s", fStageIndex, fFS.getMangleString().c_str());
+    }
+}
+
+void GrGLSLProgramBuilder::appendUniformDecls(ShaderVisibility visibility,
+                                              SkString* out) const {
+    this->onAppendUniformDecls(visibility, out);
+}
+