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/GrContext.cpp b/src/gpu/GrContext.cpp
index 3a1ca13..0e01313 100644
--- a/src/gpu/GrContext.cpp
+++ b/src/gpu/GrContext.cpp
@@ -427,7 +427,7 @@
             if (!drawContext) {
                 return false;
             }
-            paint.addColorProcessor(fp);
+            paint.addColorFragmentProcessor(fp);
             SkRect rect = SkRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height));
             drawContext->drawRect(renderTarget, GrClip::WideOpen(), paint, matrix, rect, NULL);
 
@@ -532,7 +532,7 @@
                     GrConfigConversionEffect::kNone_PMConversion, textureMatrix));
             }
             if (fp) {
-                paint.addColorProcessor(fp);
+                paint.addColorFragmentProcessor(fp);
                 SkRect rect = SkRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height));
                 GrDrawContext* drawContext = this->drawContext();
                 drawContext->drawRect(temp->asRenderTarget(), GrClip::WideOpen(), paint,