Add PlatformPictureSkia and RecordingPlatformDeviceSkia.

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 "skia/ext/bitmap_platform_device.h"
 #include "third_party/skia/include/core/SkTypes.h"
 
 namespace skia {
@@ skipping 29 matching lines @@
     delete canvas;
     canvas = NULL;
   }
   return canvas;
 }
 
 SkDevice* GetTopDevice(const SkCanvas& canvas) {
   return canvas.getTopDevice(true);
 }
 
-bool SupportsPlatformPaint(const SkCanvas* canvas) {
+PlatformDevice::PlatformPaint PlatformPaintSupport(const SkCanvas* canvas) {
   PlatformDevice* platform_device = GetPlatformDevice(GetTopDevice(*canvas));
-  return platform_device && platform_device->SupportsPlatformPaint();
+  if (!platform_device)
+    return PlatformDevice::PLATFORM_PAINT_UNSUPPORTED;
+  return platform_device->PlatformPaintSupport();
+}
+
+bool IsPlatformPaintSupported(const SkCanvas* canvas) {
+  return PlatformPaintSupport(canvas) !=
+      PlatformDevice::PLATFORM_PAINT_UNSUPPORTED;
 }
 
 PlatformSurface BeginPlatformPaint(SkCanvas* canvas) {
   PlatformDevice* platform_device = GetPlatformDevice(GetTopDevice(*canvas));
   if (platform_device)
     return platform_device->BeginPlatformPaint();
 
   return 0;
 }
 
@@ skipping 23 matching lines @@
                SkIntToScalar(width), SkIntToScalar(height));
   SkPaint paint;
   // so we don't draw anything on a device that ignores xfermodes
   paint.setColor(0);
   // install our custom mode
   paint.setXfermode(new SkProcXfermode(MakeOpaqueXfermodeProc))->unref();
   canvas->drawRect(rect, paint);
 }
 
 }  // namespace skia