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

chrome/renderer/print_web_view_helper_win.cc

Index: chrome/renderer/print_web_view_helper_win.cc
diff --git a/chrome/renderer/print_web_view_helper_win.cc b/chrome/renderer/print_web_view_helper_win.cc
index d5868df2e72b3bbccab3a52da46572e97a4199ba..fd18a050ccf5633ca84367ef9c210055f7235976 100644
--- a/chrome/renderer/print_web_view_helper_win.cc
+++ b/chrome/renderer/print_web_view_helper_win.cc
@@ -17,9 +17,9 @@
 #include "printing/metafile_skia_wrapper.h"
 #include "printing/page_size_margins.h"
 #include "printing/units.h"
-#include "skia/ext/vector_canvas.h"
 #include "skia/ext/platform_device.h"
-#include "third_party/skia/include/core/SkRefCnt.h"
+#include "skia/ext/refptr.h"
+#include "skia/ext/vector_canvas.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
 #include "ui/gfx/gdi_util.h"
 #include "ui/gfx/point.h"
@@ -174,13 +174,12 @@ void PrintWebViewHelper::RenderPage(
   gfx::Rect canvas_area =
       params.display_header_footer ? gfx::Rect(page_size) : content_area;
 
-  SkDevice* device = metafile->StartPageForVectorCanvas(
+  skia::RefPtr<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 = new skia::VectorCanvas(device);
 
   if (is_preview) {
     printing::MetafileSkiaWrapper::SetMetafileOnCanvas(*canvas, metafile);