Remove nvpr from CanvasKit

Saves about 20k uncompressed, 7k compressed.

Bug: skia:
Change-Id: I060c58380f3e3266bca9028ba5ba6aa17ce178dc
Reviewed-on: https://skia-review.googlesource.com/c/161942
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
diff --git a/BUILD.gn b/BUILD.gn
index fb394aa..6d141ca 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -35,6 +35,7 @@
 
   skia_android_serial = ""
   skia_enable_ccpr = true
+  skia_enable_nvpr = true
   skia_enable_discrete_gpu = true
   skia_enable_effects = true
   skia_enable_effects_imagefilters = true
@@ -592,6 +593,10 @@
     sources -= skia_ccpr_sources
     sources += [ "src/gpu/ccpr/GrCoverageCountingPathRenderer_none.cpp" ]
   }
+  if (!skia_enable_nvpr) {
+    sources -= skia_nvpr_sources
+    sources += [ "src/gpu/GrPathRendering_none.cpp" ]
+  }
 
   # These paths need to be absolute to match the ones produced by shared_sources.gni.
   sources -= get_path_info([ "src/gpu/gl/GrGLMakeNativeInterface_none.cpp" ],