GrCustomStage Renaming Part 2

GrSamplerState member rename
GrCustomStageUnitTest rename
some comment updates
Review URL: https://codereview.appspot.com/6771043

git-svn-id: http://skia.googlecode.com/svn/trunk@6078 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/gl/GrGLProgram.cpp b/src/gpu/gl/GrGLProgram.cpp
index 847b6ef..08e58e8 100644
--- a/src/gpu/gl/GrGLProgram.cpp
+++ b/src/gpu/gl/GrGLProgram.cpp
@@ -977,8 +977,8 @@
     for (int s = 0; s < GrDrawState::kNumStages; ++s) {
         if (NULL != fProgramStage[s]) {
             const GrSamplerState& sampler = drawState.getSampler(s);
-            GrAssert(NULL != sampler.getCustomStage());
-            fProgramStage[s]->setData(fUniformManager, *sampler.getCustomStage());
+            GrAssert(NULL != sampler.getEffect());
+            fProgramStage[s]->setData(fUniformManager, *sampler.getEffect());
         }
     }
 }