Blimp: Add BlobChannel Helium messages and delegate impls.

blimp/common/proto/BUILD.gn

 # Copyright 2015 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.
 
 import("//third_party/protobuf/proto_library.gni")
 
 group("proto") {
   public_deps = [
     ":blimp_proto",
     "//third_party/protobuf:protobuf_lite",
   ]
 }
 
 component("blimp_proto") {
   # Only expose the target to the "proto" group.
   visibility = [ ":proto" ]
 
   public_deps = [
     ":proto_internal",
   ]
 }
 
 proto_library("proto_internal") {
   # Only expose the target to the "blimp_proto" target.
   visibility = [ ":blimp_proto" ]
 
   sources = [
     "blimp_message.proto",
     "blob_cache.proto",
+    "blob_channel.proto",
     "compositor.proto",
     "ime.proto",
     "input.proto",
     "navigation.proto",
     "protocol_control.proto",
     "render_widget.proto",
     "settings.proto",
     "tab_control.proto",
   ]
 
   cc_generator_options = "dllexport_decl=BLIMP_PROTO_EXPORT:"
   cc_include = "blimp/common/proto/blimp_proto_export.h"
 
   defines = [ "BLIMP_PROTO_IMPLEMENTATION" ]
 
   # Warn if clang creates exit destructors
   extra_configs = [ "//build/config/compiler:wexit_time_destructors" ]
 }