Move glue code of blob channel to blimp_client_context_impl.

blimp/client/core/compositor/blob_channel_feature.cc

Index: blimp/client/core/compositor/blob_channel_feature.cc
diff --git a/blimp/client/core/compositor/blob_channel_feature.cc b/blimp/client/core/compositor/blob_channel_feature.cc
new file mode 100644
index 0000000000000000000000000000000000000000..65d8ee289978cb953ddf8a4f460d3c184a4b378e
--- /dev/null
+++ b/blimp/client/core/compositor/blob_channel_feature.cc
@@ -0,0 +1,45 @@
+// 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.
+
+#include "blimp/client/core/compositor/blob_channel_feature.h"
+
+#include "blimp/common/blob_cache/in_memory_blob_cache.h"
+#include "blimp/common/proto/blimp_message.pb.h"
+#include "blimp/net/blob_channel/blob_channel_receiver.h"
+#include "blimp/net/blob_channel/helium_blob_receiver_delegate.h"
+
+namespace blimp {
+namespace client {
+
+BlobChannelFeature::BlobChannelFeature(
+    BlobImageSerializationProcessor::ErrorDelegate* delegate) {
+  std::unique_ptr<HeliumBlobReceiverDelegate> blob_delegate =
+      base::MakeUnique<HeliumBlobReceiverDelegate>();
+
+  // Set incoming blob message processor.
+  incoming_msg_processor_ = blob_delegate.get();
+
+  // Set BlobChannelReceiver that does the actual blob processing.
+  blob_receiver_ = BlobChannelReceiver::Create(
+      base::MakeUnique<InMemoryBlobCache>(), std::move(blob_delegate));
+  blob_image_processor_.set_blob_receiver(blob_receiver_.get());
+
+  // Set image decode error delegate.
+  DCHECK(delegate);
+  blob_image_processor_.set_error_delegate(delegate);
+}
+
+BlobChannelFeature::~BlobChannelFeature() = default;
+
+void BlobChannelFeature::ProcessMessage(
+    std::unique_ptr<BlimpMessage> message,
+    const net::CompletionCallback& callback) {
+  DCHECK(incoming_msg_processor_);
+
+  // Forward the message to |incoming_msg_processor_|.
+  incoming_msg_processor_->ProcessMessage(std::move(message), callback);
+}
+
+}  // namespace client
+}  // namespace blimp