Optionally clear PlatformCanvas instances.

skia/ext/platform_device.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 "base/logging.h"
 #include "skia/ext/platform_device.h"
 
 #include "third_party/skia/include/core/SkMetaData.h"
 
 namespace skia {
@@ skipping 54 matching lines @@
 #if defined(OS_MACOSX) || defined(OS_WIN)
 void SetIsPreviewMetafile(const SkCanvas& canvas, bool is_preview) {
   SetBoolMetaData(canvas, kIsPreviewMetafileKey, is_preview);
 }
 
 bool IsPreviewMetafile(const SkCanvas& canvas) {
   return GetBoolMetaData(canvas, kIsPreviewMetafileKey);
 }
 #endif
 
+int PlatformDevice::GetDefaultFlags(bool is_opaque) {
+  return FLAGS_INITIALIZED | (is_opaque ? FLAGS_OPAQUE : FLAGS_NONE);
+}
+
 bool PlatformDevice::IsNativeFontRenderingAllowed() {
   return true;
 }
 
 bool PlatformDevice::AlphaBlendUsed() const {
   return false;
 }
 
 }  // namespace skia