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/tools/viewer/Viewer.cpp b/tools/viewer/Viewer.cpp
index a6cd4e1..94660b0 100644
--- a/tools/viewer/Viewer.cpp
+++ b/tools/viewer/Viewer.cpp
@@ -20,6 +20,7 @@
 #include "src/core/SkOSFile.h"
 #include "src/core/SkScan.h"
 #include "src/core/SkTaskGroup.h"
+#include "src/core/SkTextBlobPriv.h"
 #include "src/gpu/GrContextPriv.h"
 #include "src/gpu/GrGpu.h"
 #include "src/gpu/GrPersistentCacheUtils.h"