Revert of Added varying struct

src/gpu/gl/builders/GrGLFragmentShaderBuilder.h

Index: src/gpu/gl/builders/GrGLFragmentShaderBuilder.h
diff --git a/src/gpu/gl/builders/GrGLFragmentShaderBuilder.h b/src/gpu/gl/builders/GrGLFragmentShaderBuilder.h
index 67dfbe3559f2e6c9e063d04327640184801f33a8..1637d25612e75ba592d8fd5bbdbb1449d2994986 100644
--- a/src/gpu/gl/builders/GrGLFragmentShaderBuilder.h
+++ b/src/gpu/gl/builders/GrGLFragmentShaderBuilder.h
@@ -9,8 +9,6 @@
 #define GrGLFragmentShaderBuilder_DEFINED
 
 #include "GrGLShaderBuilder.h"
-
-class GrGLVarying;
 
 /*
  * This base class encapsulates the functionality which the GP uses to build fragment shaders
@@ -93,7 +91,6 @@
     virtual const char* fragmentPosition() SK_OVERRIDE;
     virtual const char* dstColor() SK_OVERRIDE;
 
-private:
     // Private public interface, used by GrGLProgramBuilder to build a fragment shader
     void emitCodeToReadDstTexture();
     void enableCustomOutput();
@@ -105,6 +102,14 @@
     bool compileAndAttachShaders(GrGLuint programId, SkTDArray<GrGLuint>* shaderIds) const;
     void bindFragmentShaderLocations(GrGLuint programID);
 
+    /*
+     * An internal call for GrGLProgramBuilder to use to add varyings to the vertex shader
+     */
+    void addVarying(GrSLType type,
+                   const char* name,
+                   const char** fsInName,
+                   GrGLShaderVar::Precision fsPrecision = GrGLShaderVar::kDefault_Precision);
+
     // As GLProcessors emit code, there are some conditions we need to verify.  We use the below
     // state to track this.  The reset call is called per processor emitted.
     bool hasReadDstColor() const { return fHasReadDstColor; }
@@ -114,12 +119,7 @@
         fHasReadFragmentPosition = false;
     }
 
-    /*
-     * An internal call for GrGLProgramBuilder to use to add varyings to the vertex shader
-     */
-    void addVarying(GrGLVarying* v,
-                    GrGLShaderVar::Precision fsPrec = GrGLShaderVar::kDefault_Precision);
-
+private:
     /**
      * Features that should only be enabled by GrGLFragmentShaderBuilder itself.
      */