[blimp] Add SkPicture caching support.

blimp/test/support/compositor/picture_cache_test_support.h

Index: blimp/test/support/compositor/picture_cache_test_support.h
diff --git a/blimp/test/support/compositor/picture_cache_test_support.h b/blimp/test/support/compositor/picture_cache_test_support.h
new file mode 100644
index 0000000000000000000000000000000000000000..da2da9fe0bf4ce2675376d0abeca227ecf44e7f1
--- /dev/null
+++ b/blimp/test/support/compositor/picture_cache_test_support.h
@@ -0,0 +1,39 @@
+// Copyright 2016 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.
+
+#ifndef BLIMP_TEST_SUPPORT_COMPOSITOR_PICTURE_CACHE_TEST_SUPPORT_H_
+#define BLIMP_TEST_SUPPORT_COMPOSITOR_PICTURE_CACHE_TEST_SUPPORT_H_
+
+#include "blimp/common/blob_cache/blob_cache.h"
+#include "cc/proto/picture_cache.h"

[Kevin M, 2016/06/11 00:29:33]

A lot of these can be turned into prototypes

[nyquist, 2016/06/14 01:37:57]

I'm not sure I understand what you want me to do with this?

The plan for this support tool was just to aid the writing of tests as they are
today, not for "all possible things that we could want in the future".

Maybe I'm just misunderstanding something?

+#include "third_party/skia/include/core/SkColor.h"
+#include "third_party/skia/include/core/SkPicture.h"
+#include "third_party/skia/include/core/SkRefCnt.h"
+
+namespace blimp {
+
+// Creates an SkPicture filled with with the given |color|.
+sk_sp<const SkPicture> CreateSkPicture(SkColor color);
+
+// Serializes the given picture into an SkData object.
+sk_sp<SkData> SerializePicture(sk_sp<const SkPicture> picture);
+
+// Serializes an SkPicture and returns the BlobId for the serialized form of
+// the picture.
+const BlobId GetBlobId(sk_sp<const SkPicture> picture);

[Kevin M, 2016/06/11 00:29:33]

Why return a const value type...?

[nyquist, 2016/06/14 01:37:57]

Done.

+
+// Deserializes the SkPicture represented by |data.
+sk_sp<const SkPicture> DeserializePicture(sk_sp<SkData> data);
+
+// Compares an SkPicture and SkPicture represented by the SkData in the
+// cc::PictureData.
+bool SamePicture(sk_sp<const SkPicture> picture,
+                 const cc::PictureData& picture_data);
+
+// Utility function to create a valid cc::PictureData from an SkPicture.
+cc::PictureData CreatePictureData(sk_sp<const SkPicture> picture);
+
+}  // namespace blimp
+
+#endif  // BLIMP_TEST_SUPPORT_COMPOSITOR_PICTURE_CACHE_TEST_SUPPORT_H_