[Ozone] Fix build

ui/ozone/platform/test/test_window_manager.cc

 // Copyright 2014 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 "ui/ozone/platform/test/test_window_manager.h"
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/location.h"
 #include "base/stl_util.h"
@@ skipping 21 matching lines @@
 class FileSurface : public SurfaceOzoneCanvas {
  public:
   FileSurface(const base::FilePath& location) : location_(location) {}
   ~FileSurface() override {}
 
   // SurfaceOzoneCanvas overrides:
   void ResizeCanvas(const gfx::Size& viewport_size) override {
     surface_ = skia::AdoptRef(SkSurface::NewRaster(SkImageInfo::MakeN32Premul(
         viewport_size.width(), viewport_size.height())));
   }
-  skia::RefPtr<SkCanvas> GetCanvas() override {
-    return skia::SharePtr(surface_->getCanvas());
-  }
+  skia::RefPtr<SkSurface> GetSurface() override { return surface_; }
   void PresentCanvas(const gfx::Rect& damage) override {
     if (location_.empty())
       return;
     SkBitmap bitmap;
     bitmap.setInfo(surface_->getCanvas()->imageInfo());
 
     // TODO(dnicoara) Use SkImage instead to potentially avoid a copy.
     // See crbug.com/361605 for details.
     if (surface_->getCanvas()->readPixels(&bitmap, 0, 0)) {
       base::WorkerPool::PostTask(
@@ skipping 48 matching lines @@
   return make_scoped_ptr<SurfaceOzoneCanvas>(new FileSurface(window->path()));
 }
 
 bool TestWindowManager::LoadEGLGLES2Bindings(
     AddGLLibraryCallback add_gl_library,
     SetGLGetProcAddressProcCallback set_gl_get_proc_address) {
   return false;
 }
 
 }  // namespace ui