blimp: Add settings to allow the client to download the whole page.

blimp/common/proto/settings.proto

+// 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.
+
+syntax = "proto2";
+
+option optimize_for = LITE_RUNTIME;
+
+package blimp;
+
+// This includes any settings/flags that can be set on the client or the engine.
+message SettingsMessage {
+  optional EngineSettingsMessage engine_settings = 1;
+}
+
+// Client ==> Engine Settings
+message EngineSettingsMessage {
+  // -----------------------Web Preferences----------------------
+  optional bool record_whole_document = 1;
+}