ui: Use skia::RefPtr<T> for implicit safe reference counting.

ui/gfx/blit_unittest.cc

 // Copyright (c) 2010 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 "base/basictypes.h"
 #include "base/shared_memory.h"
 #include "skia/ext/platform_canvas.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/blit.h"
 #include "ui/gfx/point.h"
@@ skipping 125 matching lines @@
 }
 
 #if defined(OS_WIN)
 
 TEST(Blit, WithSharedMemory) {
   const int kCanvasWidth = 5;
   const int kCanvasHeight = 5;
   base::SharedMemory shared_mem;
   ASSERT_TRUE(shared_mem.CreateAnonymous(kCanvasWidth * kCanvasHeight));
   base::SharedMemoryHandle section = shared_mem.handle();
-  SkCanvas* canvas = skia::CreatePlatformCanvas(kCanvasWidth, kCanvasHeight,
-                                   true, section, skia::RETURN_NULL_ON_FAILURE);
-  ASSERT_TRUE(NULL != canvas);
-  SkAutoUnref aur(canvas);
+  skia::RefPtr<SkCanvas> canvas = skia::AdoptRef(
+      skia::CreatePlatformCanvas(kCanvasWidth, kCanvasHeight, true, section,
+                                 skia::RETURN_NULL_ON_FAILURE));
+  ASSERT_TRUE(canvas);
   shared_mem.Close();
 
   uint8 initial_values[kCanvasHeight][kCanvasWidth] = {
       { 0x00, 0x01, 0x02, 0x03, 0x04 },
       { 0x10, 0x11, 0x12, 0x13, 0x14 },
       { 0x20, 0x21, 0x22, 0x23, 0x24 },
       { 0x30, 0x31, 0x32, 0x33, 0x34 },
       { 0x40, 0x41, 0x42, 0x43, 0x44 }};
-  SetToCanvas<5, 5>(canvas, initial_values);
+  SetToCanvas<5, 5>(canvas.get(), initial_values);
 
   // Sanity check on input.
-  VerifyCanvasValues<5, 5>(canvas, initial_values);
+  VerifyCanvasValues<5, 5>(canvas.get(), initial_values);
 }
 
 #endif