Modify GLSL version declaration to allow access to compat. features

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
 
 #include "gl/GrGLInterface.h"
 #include "GrColor.h"
 #include "GrTypesPriv.h"
 
+class GrGLContextInfo;
 class GrGLShaderVar;
 class SkString;
 
 // Limited set of GLSL versions we build shaders for. Caller should round
 // down the GLSL version to one of these enums.
 enum GrGLSLGeneration {
     /**
      * Desktop GLSL 1.10 and ES2 shading language (based on desktop GLSL 1.20)
      */
     k110_GrGLSLGeneration,
@@ skipping 51 matching lines @@
 /**
  * Gets the most recent GLSL Generation compatible with the OpenGL context.
  */
 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(GrGLBinding binding,
-                                 GrGLSLGeneration v);
+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:
@@ skipping 125 matching lines @@
  */
 GrSLConstantVec GrGLSLGetComponent4f(SkString* outAppend,
                                      const char* expr,
                                      GrColorComponentFlags component,
                                      GrSLConstantVec defaultExpr = kNone_GrSLConstantVec,
                                      bool omitIfConst = false);
 
 #include "GrGLSL_impl.h"
 
 #endif