WIP RasterCanvasLayerAllocator experiment 2

src/core/SkManagedBitmapDevice.cpp

Index: src/core/SkManagedBitmapDevice.cpp
diff --git a/src/core/SkManagedBitmapDevice.cpp b/src/core/SkManagedBitmapDevice.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..04f02937733d97015d6bf8a9ca191ad664ef5867
--- /dev/null
+++ b/src/core/SkManagedBitmapDevice.cpp
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkManagedBitmapDevice.h"
+
+SkManagedBitmapDevice::SkManagedBitmapDevice(const SkBitmap& bitmap,
+                                             const SkSurfaceProps& surfaceProps,
+                                             void (*deallocator) (void*),
+                                             void* deallocatorPayload) :
+    INHERITED(bitmap, surfaceProps),
+    fDeallocator(deallocator),
+    fDeallocatorPayload(deallocatorPayload) { }
+
+SkManagedBitmapDevice::~SkManagedBitmapDevice() {
+    if (fDeallocator) {
+        fDeallocator(fDeallocatorPayload);
+    }
+}
+