Rename GrMeshDrawOp::Target::glyphCache to strikeCache

This renaming, obviously, propagates to the GrOpFlushState derived class.

This CL also removes GrStrikeCache access from:
  SkInternalAtlasTextContext - accessor not used
  GrAtlasManager             - strike cache not used internally


Change-Id: I7b82dc14be7ba7eabe604218f29f875f08a259a5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/282602
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/GrOpFlushState.cpp b/src/gpu/GrOpFlushState.cpp
index dad1485..dfaa9d6 100644
--- a/src/gpu/GrOpFlushState.cpp
+++ b/src/gpu/GrOpFlushState.cpp
@@ -197,7 +197,7 @@
     return fOpArgs->appliedClip() ? std::move(*fOpArgs->appliedClip()) : GrAppliedClip();
 }
 
-GrStrikeCache* GrOpFlushState::glyphCache() const {
+GrStrikeCache* GrOpFlushState::strikeCache() const {
     return fGpu->getContext()->priv().getGrStrikeCache();
 }