Initial refactor of shaderbuilder

src/effects/gradients/SkSweepGradient.cpp

Index: src/effects/gradients/SkSweepGradient.cpp
diff --git a/src/effects/gradients/SkSweepGradient.cpp b/src/effects/gradients/SkSweepGradient.cpp
index a5392160504e9e2b29dde872e01b82a339805c2c..2718d162d649dd9773f425759d9d9592daea0f08 100644
--- a/src/effects/gradients/SkSweepGradient.cpp
+++ b/src/effects/gradients/SkSweepGradient.cpp
@@ -173,7 +173,7 @@ void SkSweepGradient::SweepGradientContext::shadeSpan16(int x, int y, uint16_t*
 #if SK_SUPPORT_GPU
 
 #include "GrTBackendEffectFactory.h"
-#include "gl/GrGLShaderBuilder.h"
+#include "gl/builders/GrGLProgramBuilder.h"
 #include "SkGr.h"
 
 class GrGLSweepGradient : public GrGLGradientEffect {
@@ -183,7 +183,7 @@ public:
                       const GrDrawEffect&) : INHERITED (factory) { }
     virtual ~GrGLSweepGradient() { }
 
-    virtual void emitCode(GrGLShaderBuilder*,
+    virtual void emitCode(GrGLProgramBuilder*,
                           const GrDrawEffect&,
                           const GrEffectKey&,
                           const char* outputColor,
@@ -253,7 +253,7 @@ GrEffect* GrSweepGradient::TestCreate(SkRandom* random,
 
 /////////////////////////////////////////////////////////////////////
 
-void GrGLSweepGradient::emitCode(GrGLShaderBuilder* builder,
+void GrGLSweepGradient::emitCode(GrGLProgramBuilder* builder,
                                  const GrDrawEffect&,
                                  const GrEffectKey& key,
                                  const char* outputColor,
@@ -262,7 +262,7 @@ void GrGLSweepGradient::emitCode(GrGLShaderBuilder* builder,
                                  const TextureSamplerArray& samplers) {
     uint32_t baseKey = key.get32(0);
     this->emitUniforms(builder, baseKey);
-    SkString coords2D = builder->ensureFSCoords2D(coords, 0);
+    SkString coords2D = builder->getFragmentShaderBuilder()->ensureFSCoords2D(coords, 0);
     const GrGLContextInfo ctxInfo = builder->ctxInfo();
     SkString t;
     // 0.1591549430918 is 1/(2*pi), used since atan returns values [-pi, pi]