Make draw* lines responsible for cache management

src/gpu/text/GrAtlasTextContext.h

Index: src/gpu/text/GrAtlasTextContext.h
diff --git a/src/gpu/text/GrAtlasTextContext.h b/src/gpu/text/GrAtlasTextContext.h
index e38243d4805d5e469df07fa7e93776b43081688b..3971352e96d7bf112af30bd4c31c044e261c5479 100644
--- a/src/gpu/text/GrAtlasTextContext.h
+++ b/src/gpu/text/GrAtlasTextContext.h
@@ -74,13 +74,13 @@ private:
                                     const SkPoint& offset);
 
     void internalDrawDFText(GrAtlasTextBlob*, int runIndex,
-                            SkGlyphCache*, const SkPaint&,
+                            const SkPaint&,
                             GrColor color, const SkMatrix& viewMatrix,
                             const char text[], size_t byteLength,
                             SkScalar x, SkScalar y,
                             SkScalar textRatio, const SkPaint& origPaint);
     void internalDrawDFPosText(GrAtlasTextBlob*, int runIndex,
-                               SkGlyphCache*, const SkPaint&,
+                               const SkPaint&,
                                GrColor color, const SkMatrix& viewMatrix,
                                const char text[], size_t byteLength,
                                const SkScalar pos[], int scalarsPerPosition,
@@ -90,7 +90,6 @@ private:
 
     // sets up the descriptor on the blob and returns a detached cache.  Client must attach
     inline static GrColor ComputeCanonicalColor(const SkPaint&, bool lcd);
-    inline SkGlyphCache* setupCache(Run*, const SkPaint&, const SkMatrix* viewMatrix, bool noGamma);
     void regenerateTextBlob(GrAtlasTextBlob* bmp, const SkPaint& skPaint, GrColor,
                             const SkMatrix& viewMatrix,
                             const SkTextBlob* blob, SkScalar x, SkScalar y,