Remove GrAtlasManager.h from all other .h files

Having GrAtlasManager.h in GrContextPriv.h was needlessly propagating dependence on that header.

Change-Id: Idf5836f1e217ecd2da91f751b488a63a884c02ce
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/281739
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
diff --git a/tests/OpChainTest.cpp b/tests/OpChainTest.cpp
index 78cf72e..f86eb04 100644
--- a/tests/OpChainTest.cpp
+++ b/tests/OpChainTest.cpp
@@ -10,6 +10,7 @@
 #include "src/gpu/GrMemoryPool.h"
 #include "src/gpu/GrOpFlushState.h"
 #include "src/gpu/GrOpsTask.h"
+#include "src/gpu/GrProxyProvider.h"
 #include "src/gpu/ops/GrOp.h"
 #include "tests/Test.h"