Big Cleanup: SkBitmapFactory, SkLazyPixelRef, SkImageCache

src/core/SkDiscardableMemory.h

Index: src/core/SkDiscardableMemory.h
diff --git a/src/core/SkDiscardableMemory.h b/src/core/SkDiscardableMemory.h
index e1634eef4f4013a5945f4cb64f67b09c17d16271..7f401ed1e86d59da18bcc0d1f50a9e6ae183cc24 100644
--- a/src/core/SkDiscardableMemory.h
+++ b/src/core/SkDiscardableMemory.h
@@ -9,6 +9,7 @@
 #define SkDiscardableMemory_DEFINED
 
 #include "SkTypes.h"
+#include "SkRefCnt.h"
 
 /**
  *  Interface for discardable memory. Implementation is provided by the
@@ -23,6 +24,16 @@ public:
      */
     static SkDiscardableMemory* Create(size_t bytes);
 
+    /**
+     *  Factory class that creates, initializes and locks an SkDiscardableMemory
+     *  object. If either of these steps fails, a NULL pointer will be returned.
+     */
+    class Factory : public SkRefCnt {
+    public:
+        virtual SkDiscardableMemory* create(size_t bytes) = 0;
+        virtual ~Factory() { }
+    };
+
     /** Must not be called while locked.
      */
     virtual ~SkDiscardableMemory() {}