Remove GrStagedProcessor, remove the word Stage as it applies to FPs

Committed: https://skia.googlesource.com/skia/+/24243446cdf7b7e4e132c2a0c387c7723777e0c7

Review URL: https://codereview.chromium.org/1307223004
diff --git a/src/gpu/gl/GrGLProgramDesc.cpp b/src/gpu/gl/GrGLProgramDesc.cpp
index 5365ffb..6b38cc6 100644
--- a/src/gpu/gl/GrGLProgramDesc.cpp
+++ b/src/gpu/gl/GrGLProgramDesc.cpp
@@ -134,9 +134,8 @@
         return false;
     }
 
-    for (int s = 0; s < pipeline.numFragmentStages(); ++s) {
-        const GrPendingFragmentStage& fps = pipeline.getFragmentStage(s);
-        const GrFragmentProcessor& fp = *fps.processor();
+    for (int i = 0; i < pipeline.numFragmentProcessors(); ++i) {
+        const GrFragmentProcessor& fp = pipeline.getFragmentProcessor(i);
         if (!get_frag_proc_and_meta_keys(primProc, fp, gpu->glCaps(), &b)) {
             glDesc->key().reset();
             return false;
@@ -167,8 +166,8 @@
         header->fFragPosKey = 0;
     }
     header->fSnapVerticesToPixelCenters = pipeline.snapVerticesToPixelCenters();
-    header->fColorEffectCnt = pipeline.numColorFragmentStages();
-    header->fCoverageEffectCnt = pipeline.numCoverageFragmentStages();
+    header->fColorEffectCnt = pipeline.numColorFragmentProcessors();
+    header->fCoverageEffectCnt = pipeline.numCoverageFragmentProcessors();
     glDesc->finalize();
     return true;
 }