Reduce use of GrRenderTarget in GrTextContexts

src/gpu/GrAtlasTextContext.h

Index: src/gpu/GrAtlasTextContext.h
diff --git a/src/gpu/GrAtlasTextContext.h b/src/gpu/GrAtlasTextContext.h
index 90e401008d4ad5567f53b9030ccd0a47b035e348..32cdd146a595d16bcd9281c3e3a47419291ada6a 100644
--- a/src/gpu/GrAtlasTextContext.h
+++ b/src/gpu/GrAtlasTextContext.h
@@ -36,8 +36,7 @@ private:
     GrAtlasTextContext(GrContext*, const SkSurfaceProps&);
     ~GrAtlasTextContext() override {}
 
-    bool canDraw(const GrRenderTarget*, const GrClip&, const GrPaint&,
-                 const SkPaint&, const SkMatrix& viewMatrix) override;
+    bool canDraw(const SkPaint&, const SkMatrix& viewMatrix) override;
 
     void onDrawText(GrDrawContext*, GrRenderTarget*, const GrClip&, const GrPaint&, const SkPaint&,
                     const SkMatrix& viewMatrix, const char text[], size_t byteLength,
@@ -96,7 +95,7 @@ private:
 
     // A helper for drawing BitmapText in a run of distance fields
     inline void fallbackDrawPosText(GrAtlasTextBlob*, int runIndex,
-                                    GrRenderTarget*, const GrClip&, GrColor color,
+                                    const GrClip&, GrColor color,
                                     const SkPaint&, const SkMatrix& viewMatrix,
                                     const SkTDArray<char>& fallbackTxt,
                                     const SkTDArray<SkScalar>& fallbackPos,
@@ -149,12 +148,12 @@ private:
 
     // Test methods
     // TODO this is really ugly.  It'd be much nicer if positioning could be moved to batch
-    inline GrAtlasTextBlob* createDrawTextBlob(GrRenderTarget*, const GrClip&, const GrPaint&,
-                                              const SkPaint&, const SkMatrix& viewMatrix,
-                                              const char text[], size_t byteLength,
-                                              SkScalar x, SkScalar y,
-                                              const SkIRect& regionClipBounds);
-    inline GrAtlasTextBlob* createDrawPosTextBlob(GrRenderTarget*, const GrClip&, const GrPaint&,
+    inline GrAtlasTextBlob* createDrawTextBlob(GrDrawContext*, const GrClip&, const GrPaint&,
+                                               const SkPaint&, const SkMatrix& viewMatrix,
+                                               const char text[], size_t byteLength,
+                                               SkScalar x, SkScalar y,
+                                               const SkIRect& regionClipBounds);
+    inline GrAtlasTextBlob* createDrawPosTextBlob(GrDrawContext*, const GrClip&, const GrPaint&,
                                                  const SkPaint&, const SkMatrix& viewMatrix,
                                                  const char text[], size_t byteLength,
                                                  const SkScalar pos[], int scalarsPerPosition,