Delete blimp/helium and remove references to it from dependent targets

blimp/helium/serializable_struct.cc

Index: blimp/helium/serializable_struct.cc
diff --git a/blimp/helium/serializable_struct.cc b/blimp/helium/serializable_struct.cc
deleted file mode 100644
index 1fc0727c53e9c61c8ef62e9151fed70278d25d42..0000000000000000000000000000000000000000
--- a/blimp/helium/serializable_struct.cc
+++ /dev/null
@@ -1,41 +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.
-
-#include "blimp/helium/serializable_struct.h"
-
-namespace blimp {
-namespace helium {
-
-SerializableStruct::SerializableStruct() {}
-
-SerializableStruct::~SerializableStruct() {}
-
-bool SerializableStruct::Parse(
-    google::protobuf::io::CodedInputStream* input_stream) {
-  for (auto* field : fields_) {
-    if (!field->Parse(input_stream)) {
-      return false;
-    }
-  }
-  return true;
-}
-
-void SerializableStruct::Serialize(
-    google::protobuf::io::CodedOutputStream* output_stream) const {
-  for (const auto* field : fields_) {
-    field->Serialize(output_stream);
-  }
-}
-
-SerializableStruct::FieldBase::FieldBase() {}
-
-SerializableStruct::FieldBase::~FieldBase() {}
-
-void SerializableStruct::FieldBase::RegisterWith(
-    SerializableStruct* container) {
-  container->fields_.push_back(this);
-}
-
-}  // namespace helium
-}  // namespace blimp