Fix inclusion of SkDrawPictureCallback.h

cc/resources/drawing_display_item.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 "cc/resources/drawing_display_item.h"
 
 #include "third_party/skia/include/core/SkCanvas.h"
+#include "third_party/skia/include/core/SkDrawPictureCallback.h"

[danakj, 2015/01/06 15:42:46]

A forward declaration seems like enough here?

[robertphillips, 2015/01/06 16:08:09]

This include will go away after the Skia-side renaming has landed and I perform
the Chromium-side renaming. It is needed for the Skia-side renaming to land
however so that it is known that an SkDrawPictureCallback is derived from
SkAbortCallback.

 #include "third_party/skia/include/core/SkMatrix.h"
 #include "third_party/skia/include/core/SkPicture.h"
 #include "third_party/skia/include/utils/SkPictureUtils.h"
 
 namespace cc {
 
 DrawingDisplayItem::DrawingDisplayItem(skia::RefPtr<SkPicture> picture,
                                        gfx::PointF location)
     : picture_(picture), location_(location) {
 }
@@ skipping 19 matching lines @@
 int DrawingDisplayItem::ApproximateOpCount() const {
   return picture_->approximateOpCount() + sizeof(gfx::PointF);
 }
 
 size_t DrawingDisplayItem::PictureMemoryUsage() const {
   DCHECK(picture_);
   return SkPictureUtils::ApproximateBytesUsed(picture_.get());
 }
 
 }  // namespace cc