Replace many skia::RefPtr with sk_sp<> in cc/

skia/ext/platform_canvas.cc

 // Copyright (c) 2011 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 "skia/ext/platform_canvas.h"
 
 #include "base/logging.h"
 #include "build/build_config.h"
 #include "skia/ext/platform_device.h"
 #include "third_party/skia/include/core/SkMetaData.h"
@@ skipping 51 matching lines @@
 }
 
 bool SupportsPlatformPaint(const SkCanvas* canvas) {
   return GetPlatformDevice(GetTopDevice(*canvas)) != nullptr;
 }
 
 size_t PlatformCanvasStrideForWidth(unsigned width) {
   return 4 * width;
 }
 
-SkCanvas* CreateCanvas(const sk_sp<SkBaseDevice>& device,
+SkCanvas* CreateCanvas(sk_sp<SkBaseDevice>& device,
                        OnFailureType failureType) {
   if (!device) {
     if (CRASH_ON_FAILURE == failureType)
       SK_CRASH();
     return nullptr;
   }
   return new SkCanvas(device.get());
 }
 
 SkMetaData& GetMetaData(const SkCanvas& canvas) {
@@ skipping 22 matching lines @@
 
 ScopedPlatformPaint::ScopedPlatformPaint(SkCanvas* canvas) :
     canvas_(canvas),
     platform_surface_(nullptr) {
   PlatformDevice* platform_device = GetPlatformDevice(GetTopDevice(*canvas));
   if (platform_device)
     platform_surface_ = platform_device->BeginPlatformPaint();
 }
 
 }  // namespace skia