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/TestUtils.h b/tests/TestUtils.h
index 5fc9afd..1e0c1e7 100644
--- a/tests/TestUtils.h
+++ b/tests/TestUtils.h
@@ -29,7 +29,7 @@
                             bool onlyTestRTConfig, const char* testName);
 
 // Ensure that RGBA 8888 pixels can be copied into 'dstContext'
-void test_copy_to_surface(skiatest::Reporter*, GrProxyProvider*,
+void test_copy_to_surface(skiatest::Reporter*, GrContext*,
                           GrSurfaceContext* dstContext, const char* testName);
 
 // Fills data with a red-green gradient