Simplify blob's appendGlyph interface

Change-Id: I62fcaef94570982d46e678b8e128b02e2514a96a
Reviewed-on: https://skia-review.googlesource.com/145528
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Herb Derby <herb@google.com>
diff --git a/src/gpu/text/GrTextBlob.cpp b/src/gpu/text/GrTextBlob.cpp
index 6545f84..783d36f 100644
--- a/src/gpu/text/GrTextBlob.cpp
+++ b/src/gpu/text/GrTextBlob.cpp
@@ -72,9 +72,7 @@
                                   const SkRect& positions,
                                   GrColor color,
                                   sk_sp<GrTextStrike> strike,
-                                  GrGlyph* glyph,
-                                  SkGlyphCache* cache, const SkGlyph& skGlyph,
-                                  SkScalar x, SkScalar y, SkScalar scale, bool preTransformed) {
+                                  GrGlyph* glyph, bool preTransformed) {
 
     Run& run = fRuns[runIndex];
     GrMaskFormat format = glyph->fMaskFormat;