Move BlimpImageSerializationProcessor and WebPDecoder to //blimp/client

blimp/client/feature/compositor/blimp_image_decoder.h

Index: blimp/client/feature/compositor/blimp_image_decoder.h
diff --git a/blimp/client/feature/compositor/blimp_image_decoder.h b/blimp/client/feature/compositor/blimp_image_decoder.h
new file mode 100644
index 0000000000000000000000000000000000000000..e7f6c81f436ced4dace5593b706ea83610d4a055
--- /dev/null
+++ b/blimp/client/feature/compositor/blimp_image_decoder.h
@@ -0,0 +1,23 @@
+// 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_CLIENT_FEATURE_COMPOSITOR_BLIMP_IMAGE_DECODER_H_
+#define BLIMP_CLIENT_FEATURE_COMPOSITOR_BLIMP_IMAGE_DECODER_H_
+
+#include <stddef.h>
+
+class SkBitmap;
+
+namespace blimp {
+namespace client {
+
+// BlimpImageDecoder is an implementation of SkPicture::InstallPixelRefProc
+// which is used by the client to decode WebP images that are part of an
+// SkPicture.
+bool BlimpImageDecoder(const void* input, size_t input_size, SkBitmap* bitmap);
+
+}  // namespace client
+}  // namespace blimp
+
+#endif  // BLIMP_CLIENT_FEATURE_COMPOSITOR_BLIMP_IMAGE_DECODER_H_