Move the GL shader compilation step into GrGLShaderBuilder

src/gpu/gl/GrGLSL.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLSL_DEFINED
 #define GrGLSL_DEFINED
 
@@ skipping 69 matching lines @@
 GrGLSLGeneration GrGetGLSLGeneration(GrGLBinding binding,
                                      const GrGLInterface* gl);
 
 /**
  * Returns a string to include at the beginning of a shader to declare the GLSL
  * version.
  */
 const char* GrGetGLSLVersionDecl(const GrGLContextInfo&);
 
 /**
- * Depending on the GLSL version being emitted there may be an assumed output
- * variable from the fragment shader for the color. Otherwise, the shader must
- * declare an output variable for the color. If this function returns true:
- *    * Parameter var's name will be set to nameIfDeclared
- *    * The variable must be declared in the fragment shader
- *    * The variable has to be bound as the color output
- *      (using glBindFragDataLocation)
- *    If the function returns false:
- *    * Parameter var's name will be set to the GLSL built-in color output name.
- *    * Do not declare the variable in the shader.
- *    * Do not use glBindFragDataLocation to bind the variable
- * In either case var is initialized to represent the color output in the
- * shader.
- */
-bool GrGLSLSetupFSColorOuput(GrGLSLGeneration gen,
-                             const char* nameIfDeclared,
-                             GrGLShaderVar* var);
-/**
  * Converts a GrSLType to a string containing the name of the equivalent GLSL type.
  */
 static const char* GrGLSLTypeString(GrSLType t) {
     switch (t) {
         case kVoid_GrSLType:
             return "void";
         case kFloat_GrSLType:
             return "float";
         case kVec2f_GrSLType:
             return "vec2";
@@ skipping 105 matching lines @@
  */
 GrSLConstantVec GrGLSLGetComponent4f(SkString* outAppend,
                                      const char* expr,
                                      GrColorComponentFlags component,
                                      GrSLConstantVec defaultExpr = kNone_GrSLConstantVec,
                                      bool omitIfConst = false);
 
 #include "GrGLSL_impl.h"
 
 #endif