Create GrTextUtils

BUG=skia:

Review URL: https://codereview.chromium.org/1514933002
diff --git a/src/gpu/GrAtlasTextContext.cpp b/src/gpu/GrAtlasTextContext.cpp
index 5e11eb5..735693b 100644
--- a/src/gpu/GrAtlasTextContext.cpp
+++ b/src/gpu/GrAtlasTextContext.cpp
@@ -203,7 +203,7 @@
                                  blob, x, y, drawFilter, clip);
     }
 
-    cacheBlob->flushCached(blob, fContext, dc, this, fSurfaceProps, fDistanceAdjustTable, skPaint,
+    cacheBlob->flushCached(fContext, dc, blob, fSurfaceProps, fDistanceAdjustTable, skPaint,
                            grPaint, drawFilter, clip, viewMatrix, clipBounds, x, y, transX, transY);
 }