Move DrawingManager to RecordingContext

This CL does make use of a new GrRecordingContextPriv backdoor to break CL deadlocks. This occurs when this CL tries to create GrContext-dependent objects outside its scope.

Change-Id: I278fe9d321f8e0a4f5e9b489b1a5cc01b8974521
Reviewed-on: https://skia-review.googlesource.com/c/191287
Reviewed-by: Greg Daniel <egdaniel@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
diff --git a/tests/RectangleTextureTest.cpp b/tests/RectangleTextureTest.cpp
index e9f286f..ce6122a 100644
--- a/tests/RectangleTextureTest.cpp
+++ b/tests/RectangleTextureTest.cpp
@@ -165,8 +165,7 @@
 
         test_read_pixels(reporter, rectContext.get(), refPixels, "RectangleTexture-read");
 
-        test_copy_to_surface(reporter, context->priv().proxyProvider(),
-                              rectContext.get(), "RectangleTexture-copy-to");
+        test_copy_to_surface(reporter, context, rectContext.get(), "RectangleTexture-copy-to");
 
         test_write_pixels(reporter, rectContext.get(), true, "RectangleTexture-write");