Reduce calls sites where both the GrDrawContext & GrRenderTarget are both passed

src/gpu/GrAtlasTextContext.h

Index: src/gpu/GrAtlasTextContext.h
diff --git a/src/gpu/GrAtlasTextContext.h b/src/gpu/GrAtlasTextContext.h
index 2d445f35d8d4a7ae413a14e19c133a57ff0e4a41..70eabd21f8766e138b1a02654c3cd87fdfe35758 100644
--- a/src/gpu/GrAtlasTextContext.h
+++ b/src/gpu/GrAtlasTextContext.h
@@ -38,15 +38,15 @@ private:
 
     bool canDraw(const SkPaint&, const SkMatrix& viewMatrix) override;
 
-    void onDrawText(GrDrawContext*, GrRenderTarget*, const GrClip&, const GrPaint&, const SkPaint&,
+    void onDrawText(GrDrawContext*, const GrClip&, const GrPaint&, const SkPaint&,
                     const SkMatrix& viewMatrix, const char text[], size_t byteLength,
                     SkScalar x, SkScalar y, const SkIRect& regionClipBounds) override;
-    void onDrawPosText(GrDrawContext*, GrRenderTarget*, const GrClip&, const GrPaint&,
+    void onDrawPosText(GrDrawContext*, const GrClip&, const GrPaint&,
                        const SkPaint&, const SkMatrix& viewMatrix,
                        const char text[], size_t byteLength,
                        const SkScalar pos[], int scalarsPerPosition,
                        const SkPoint& offset, const SkIRect& regionClipBounds) override;
-    void drawTextBlob(GrDrawContext*, GrRenderTarget*, const GrClip&, const SkPaint&,
+    void drawTextBlob(GrDrawContext*, const GrClip&, const SkPaint&,
                       const SkMatrix& viewMatrix, const SkTextBlob*, SkScalar x, SkScalar y,
                       SkDrawFilter*, const SkIRect& clipBounds) override;
 
@@ -86,11 +86,11 @@ private:
                                SkScalar transX, SkScalar transY, const SkIRect& clipBounds);
 
     // We have to flush SkTextBlobs differently from drawText / drawPosText
-    void flush(const SkTextBlob*, GrAtlasTextBlob*, GrDrawContext*, GrRenderTarget*,
+    void flush(const SkTextBlob*, GrAtlasTextBlob*, GrDrawContext*,
                const SkPaint&, const GrPaint&, SkDrawFilter*, const GrClip&,
                const SkMatrix& viewMatrix, const SkIRect& clipBounds, SkScalar x, SkScalar y,
                SkScalar transX, SkScalar transY);
-    void flush(GrAtlasTextBlob*, GrDrawContext*, GrRenderTarget*, const SkPaint&,
+    void flush(GrAtlasTextBlob*, GrDrawContext*, const SkPaint&,
                const GrPaint&, const GrClip&, const SkIRect& clipBounds);
 
     // A helper for drawing BitmapText in a run of distance fields