Make SkDrawCommands lighter weight

debugger/QT/SkImageWidget.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SKIMAGEWIDGET_H_
 #define SKIMAGEWIDGET_H_
 
 #include <QWidget>
 
+#include "SkSurface.h"
 class SkDebugger;
 
 class  SkImageWidget : public QWidget {
     Q_OBJECT
 
 public:
     SkImageWidget(SkDebugger* debugger);
+    
+    virtual ~SkImageWidget() {
+        fSurface->unref();
+        delete [] fPixels;
+    }
 
     void draw() {
         this->update();
     }
 
     static const int kImageWidgetWidth = 256;
     static const int kImageWidgetHeight = 256;
 
 signals:
     void drawComplete();
 
 protected:
     void paintEvent(QPaintEvent* event);
 
 private:
-    SkDebugger *fDebugger;
+    SkDebugger* fDebugger;
+    char*       fPixels;
+    SkSurface*  fSurface;
 };
 
 #endif /* SKIMAGEWIDGET_H_ */