Add support for encoding/decoding WebP images.

blimp/common/compositor/blimp_remote_image_deserializer.cc

Index: blimp/common/compositor/blimp_remote_image_deserializer.cc
diff --git a/blimp/common/compositor/blimp_remote_image_deserializer.cc b/blimp/common/compositor/blimp_remote_image_deserializer.cc
index 883b214df8e0108268349caa2c0b5950bf674216..77442bda75eb01a376e6e5803638ebf213700229 100644
--- a/blimp/common/compositor/blimp_remote_image_deserializer.cc
+++ b/blimp/common/compositor/blimp_remote_image_deserializer.cc
@@ -4,15 +4,9 @@
 
 #include "blimp/common/compositor/blimp_remote_image_deserializer.h"
 
+#include "blimp/common/compositor/webp_decoder.h"
 #include "third_party/skia/include/core/SkPicture.h"
 
-namespace {
-bool NoopDecoder(const void* input, size_t input_size, SkBitmap* bitmap) {
-  // TODO(nyquist): Add an image decoder.
-  return false;
-}
-}
-
 namespace blimp {
 
 BlimpRemoteImageDeserializer::BlimpRemoteImageDeserializer() {}
@@ -21,7 +15,7 @@ BlimpRemoteImageDeserializer::~BlimpRemoteImageDeserializer() {}
 
 SkPicture::InstallPixelRefProc
 BlimpRemoteImageDeserializer::GetPixelDeserializer() {
-  return &NoopDecoder;
+  return &WebPDecoder;
 }
 
 }  // namespace blimp