Revert "Revert "add new signature so skia can rely on it (subclass of SkDevice)""

skia/ext/bitmap_platform_device_cairo.cc

 // Copyright 2013 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/bitmap_platform_device_cairo.h"
 #include "skia/ext/platform_canvas.h"
 
 #if defined(OS_OPENBSD)
 #include <cairo.h>
 #else
@@ skipping 156 matching lines @@
   cairo_destroy(cairo_);
 }
 
 SkBaseDevice* BitmapPlatformDevice::onCreateCompatibleDevice(
                                                      const CreateInfo& info) {
   SkASSERT(info.fInfo.colorType() == kN32_SkColorType);
   return BitmapPlatformDevice::Create(info.fInfo.width(), info.fInfo.height(),
                                       info.fInfo.isOpaque());
 }
 
+SkBaseDevice* BitmapPlatformDevice::onCreateDevice(const CreateInfo& info,
+                                                   const SkPaint*) {
+  SkASSERT(info.fInfo.colorType() == kN32_SkColorType);
+  return BitmapPlatformDevice::Create(info.fInfo.width(), info.fInfo.height(),
+                                      info.fInfo.isOpaque());
+}
+
 cairo_t* BitmapPlatformDevice::BeginPlatformPaint() {
   LoadConfig();
   cairo_surface_t* surface = cairo_get_target(cairo_);
   // Tell cairo to flush anything it has pending.
   cairo_surface_flush(surface);
   // Tell Cairo that we (probably) modified (actually, will modify) its pixel
   // buffer directly.
   cairo_surface_mark_dirty(surface);
   return cairo_;
 }
@@ skipping 29 matching lines @@
       width,
       height);
   if (cairo_surface_status(surf) != CAIRO_STATUS_SUCCESS) {
     cairo_surface_destroy(surf);
     return false;
   }
   return InstallCairoSurfacePixels(&bitmap_, surf, is_opaque);
 }
 
 }  // namespace skia