split SkPictureRecorder out of SkPicture

src/image/SkSurface_Picture.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 "SkSurface_Base.h"
 #include "SkCanvas.h"
 #include "SkImagePriv.h"
@@ skipping 28 matching lines @@
 }
 
 SkSurface_Picture::~SkSurface_Picture() {
     SkSafeUnref(fPicture);
 }
 
 SkCanvas* SkSurface_Picture::onNewCanvas() {
     if (!fPicture) {
         fPicture = SkNEW(SkPicture);
     }
+    // TODO: remove eventually
     SkCanvas* canvas = fPicture->beginRecording(this->width(), this->height());
     canvas->ref();  // our caller will call unref()
     return canvas;
 }
 
 SkSurface* SkSurface_Picture::onNewSurface(const SkImageInfo& info) {
     return SkSurface::NewPicture(info.fWidth, info.fHeight);
 }
 
 SkImage* SkSurface_Picture::onNewImageSnapshot() {
@@ skipping 24 matching lines @@
 ///////////////////////////////////////////////////////////////////////////////
 
 
 SkSurface* SkSurface::NewPicture(int width, int height) {
     if ((width | height) < 0) {
         return NULL;
     }
 
     return SkNEW_ARGS(SkSurface_Picture, (width, height));
 }