[DRP] Consistently use LoFi for an entire page

components/data_reduction_proxy/content/browser/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.
 
 static_library("browser") {
   sources = [
+    "content_data_reduction_proxy_lofi_helper.cc",
+    "content_data_reduction_proxy_lofi_helper.h",
     "data_reduction_proxy_message_filter.cc",
     "data_reduction_proxy_message_filter.h",
   ]
 
   deps = [
     "//base",
     "//components/data_reduction_proxy/content/common",
     "//content/public/browser",
     "//ipc",
     "//net",
@@ skipping 42 matching lines @@
       "data_reduction_proxy_debug_resource_throttle_unittest.cc",
       "data_reduction_proxy_debug_ui_manager_unittest.cc",
     ]
 
     deps += [
       "//skia",
       "//third_party/mojo/src/mojo/public/cpp/bindings",
     ]
   }
 }