Initial error handling code

include/core/SkPixelRef.h

 
 /*
  * Copyright 2008 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkPixelRef_DEFINED
@@ skipping 27 matching lines @@
 
 /** \class SkPixelRef
 
     This class is the smart container for pixel memory, and is used with
     SkBitmap. A pixelref is installed into a bitmap, and then the bitmap can
     access the actual pixel memory by calling lockPixels/unlockPixels.
 
     This class can be shared/accessed between multiple threads.
 */
 class SK_API SkPixelRef : public SkFlattenable {
+    typedef SkFlattenable INHERITED;
+
 public:
     SK_DECLARE_INST_COUNT(SkPixelRef)
 
     explicit SkPixelRef(SkBaseMutex* mutex = NULL);
 
     /** Return the pixel memory returned from lockPixels, or null if the
         lockCount is 0.
     */
     void* pixels() const { return fPixels; }
 
@@ skipping 142 matching lines @@
     virtual void globalRef(void* data=NULL);
 
     /**
      *  Release a "global" ref on this object.
      *  The default implementation just calls unref(), but subclasses can override
      *  this method to implement additional behavior.
      */
     virtual void globalUnref();
 #endif
 
+    SK_DEFINE_FLATTENABLE_TYPE(SkPixelRef)
+
 protected:
     /** Called when the lockCount goes from 0 to 1. The caller will have already
         acquire a mutex for thread safety, so this method need not do that.
     */
     virtual void* onLockPixels(SkColorTable**) = 0;
     /** Called when the lock count goes from 1 to 0. The caller will have
         already acquire a mutex for thread safety, so this method need not do
         that.
     */
     virtual void onUnlockPixels() = 0;
@@ skipping 45 matching lines @@
     friend class SkBitmap;
 
     SkString    fURI;
 
     // can go from false to true, but never from true to false
     bool    fIsImmutable;
     // only ever set in constructor, const after that
     bool    fPreLocked;
 
     void setMutex(SkBaseMutex* mutex);
-
-    typedef SkFlattenable INHERITED;
 };
 
 #endif