Move BlimpImageSerializationProcessor and WebPDecoder to //blimp/client

blimp/common/compositor/webp_decoder.h

Index: blimp/common/compositor/webp_decoder.h
diff --git a/blimp/common/compositor/webp_decoder.h b/blimp/common/compositor/webp_decoder.h
deleted file mode 100644
index 843db94874dbe151c6a4339f900e8186b9e6e4ef..0000000000000000000000000000000000000000
--- a/blimp/common/compositor/webp_decoder.h
+++ /dev/null
@@ -1,25 +0,0 @@
-// 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_COMMON_COMPOSITOR_WEBP_DECODER_H_
-#define BLIMP_COMMON_COMPOSITOR_WEBP_DECODER_H_
-
-#include <stddef.h>
-
-#include "blimp/common/blimp_common_export.h"
-#include "third_party/skia/include/core/SkData.h"
-
-class SkBitmap;
-
-namespace blimp {
-
-// WebPDecoder is an implementation of SkPicture::InstallPixelRefProc which
-// is used by the client to decode WebP images that are part of an SkPicture.
-BLIMP_COMMON_EXPORT bool WebPDecoder(const void* input,
-                                     size_t input_size,
-                                     SkBitmap* bitmap);
-
-}  // namespace blimp
-
-#endif  // BLIMP_COMMON_COMPOSITOR_WEBP_DECODER_H_