Preserve texture compression when saving a revised skp from debugger

debugger/QT/SkDebuggerGUI.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDebuggerGUI.h"
 #include "PictureRenderer.h"
 #include "SkPictureData.h"
 #include "SkPicturePlayback.h"
 #include "SkPictureRecord.h"
 #include <QListWidgetItem>
 #include <QtGui>
+#include "sk_tool_utils.h"
 
 #if defined(SK_BUILD_FOR_WIN32)
     #include "SysTimer_windows.h"
 #elif defined(SK_BUILD_FOR_MAC)
     #include "SysTimer_mach.h"
 #elif defined(SK_BUILD_FOR_UNIX) || defined(SK_BUILD_FOR_ANDROID)
     #include "SysTimer_posix.h"
 #else
     #include "SysTimer_c.h"
 #endif
@@ skipping 327 matching lines @@
     fInspectorWidget.setText(clipStack.c_str(), SkInspectorWidget::kClipStack_TabType);
 
     fInspectorWidget.setMatrix(fDebugger.getCurrentMatrix());
     fInspectorWidget.setClip(fDebugger.getCurrentClip());
 }
 
 void SkDebuggerGUI::saveToFile(const SkString& filename) {
     SkFILEWStream file(filename.c_str());
     SkAutoTUnref<SkPicture> copy(fDebugger.copyPicture());
 
-    copy->serialize(&file);
+    sk_tool_utils::PngPixelSerializer serializer;
+    copy->serialize(&file, &serializer);
 }
 
 void SkDebuggerGUI::loadFile(QListWidgetItem *item) {
     if (fDirectoryWidgetActive) {
         fFileName = fPath.toAscii().data();
         // don't add a '/' to files in the local directory
         if (fFileName.size() > 0) {
             fFileName.append("/");
         }
         fFileName.append(item->text().toAscii().data());
@@ skipping 479 matching lines @@
         fCanvasWidget.drawTo(fPausedRow);
     } else {
         fCanvasWidget.drawTo(fListWidget.currentRow());
     }
 }
 
 void SkDebuggerGUI::updateHit(int newHit) {
     fCommandHitBox.setText(QString::number(newHit));
 }