Introduce GrGLShaderBuilder::TextureSampler

Review URL: https://codereview.appspot.com/6495099/



git-svn-id: http://skia.googlecode.com/svn/trunk@5422 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/effects/gradients/SkGradientShaderPriv.h b/src/effects/gradients/SkGradientShaderPriv.h
index 2b584f3..8c86326 100644
--- a/src/effects/gradients/SkGradientShaderPriv.h
+++ b/src/effects/gradients/SkGradientShaderPriv.h
@@ -291,7 +291,7 @@
                          const char* gradientTValue,
                          const char* outputColor,
                          const char* inputColor,
-                         const char* samplerName);
+                         const GrGLShaderBuilder::TextureSampler&);
 
 private: