Add skia::RefPtr class to wrap ref counted classes from Skia.

chrome/renderer/print_web_view_helper_win.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/renderer/print_web_view_helper.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram.h"
 #include "base/process_util.h"
 #include "base/win/scoped_gdi_object.h"
 #include "base/win/scoped_hdc.h"
 #include "base/win/scoped_select_object.h"
 #include "chrome/common/print_messages.h"
 #include "printing/metafile.h"
 #include "printing/metafile_impl.h"
 #include "printing/metafile_skia_wrapper.h"
 #include "printing/page_size_margins.h"
 #include "printing/units.h"
+#include "skia/ext/platform_device.h"
+#include "skia/ext/refptr.h"
 #include "skia/ext/vector_canvas.h"
-#include "skia/ext/platform_device.h"
-#include "third_party/skia/include/core/SkRefCnt.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
 #include "ui/gfx/gdi_util.h"
 #include "ui/gfx/point.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
 
 using printing::ConvertUnit;
 using printing::ConvertUnitDouble;
 using printing::kPointsPerInch;
 using printing::Metafile;
@@ skipping 139 matching lines @@
   float scale_factor = css_scale_factor * webkit_page_shrink_factor;
 
   gfx::Rect canvas_area =
       params.display_header_footer ? gfx::Rect(page_size) : content_area;
 
   SkDevice* device = metafile->StartPageForVectorCanvas(
       page_size, canvas_area, scale_factor);
   DCHECK(device);
   // The printPage method may take a reference to the canvas we pass down, so it
   // can't be a stack object.
-  SkRefPtr<skia::VectorCanvas> canvas = new skia::VectorCanvas(device);
-  canvas->unref();  // SkRefPtr and new both took a reference.
+  skia::RefPtr<skia::VectorCanvas> canvas =
+      skia::AdoptRef(new skia::VectorCanvas(device));
 
   if (is_preview) {
     printing::MetafileSkiaWrapper::SetMetafileOnCanvas(*canvas, metafile);
     skia::SetIsDraftMode(*canvas, is_print_ready_metafile_sent_);
     skia::SetIsPreviewMetafile(*canvas, is_preview);
   }
 
   if (params.display_header_footer) {
     // |page_number| is 0-based, so 1 is added.
     PrintHeaderAndFooter(canvas.get(), page_number + 1,
@@ skipping 47 matching lines @@
     shared_buf.Unmap();
     return false;
   }
   shared_buf.GiveToProcess(base::GetCurrentProcessHandle(), shared_mem_handle);
   shared_buf.Unmap();
 
   Send(new PrintHostMsg_DuplicateSection(routing_id(), *shared_mem_handle,
                                          shared_mem_handle));
   return true;
 }