Rename GrAccelData to SkLayerInfo and move it to src/core

src/gpu/GrPictureUtils.cpp

Index: src/gpu/GrPictureUtils.cpp
diff --git a/src/gpu/GrPictureUtils.cpp b/src/gpu/GrPictureUtils.cpp
deleted file mode 100644
index e8e965bb57d51b32855b28601a9895e79de6ed62..0000000000000000000000000000000000000000
--- a/src/gpu/GrPictureUtils.cpp
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright 2014 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "GrPictureUtils.h"
-
-#include "SkBBoxHierarchy.h"
-#include "SkPaintPriv.h"
-#include "SkPatchUtils.h"
-#include "SkRecord.h"
-#include "SkRecords.h"
-
-SkPicture::AccelData::Key GrAccelData::ComputeAccelDataKey() {
-    static const SkPicture::AccelData::Key gGPUID = SkPicture::AccelData::GenerateDomain();
-
-    return gGPUID;
-}
-