Lo-Fi snackbar should only be shown for the first q=low response of a page

components/data_reduction_proxy.gypi

 # Copyright 2014 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.
 
 
 {
   'variables' :
   {
      'data_reduction_proxy_core_browser_sources' : [
         # Note: sources list duplicated in GN build.
@@ skipping 63 matching lines @@
         'data_reduction_proxy/core/common/data_reduction_proxy_event_store.cc',
         'data_reduction_proxy/core/common/data_reduction_proxy_event_store.h',
         'data_reduction_proxy/core/common/data_reduction_proxy_headers.cc',
         'data_reduction_proxy/core/common/data_reduction_proxy_headers.h',
         'data_reduction_proxy/core/common/data_reduction_proxy_params.cc',
         'data_reduction_proxy/core/common/data_reduction_proxy_params.h',
         'data_reduction_proxy/core/common/data_reduction_proxy_pref_names.cc',
         'data_reduction_proxy/core/common/data_reduction_proxy_pref_names.h',
         'data_reduction_proxy/core/common/data_reduction_proxy_switches.cc',
         'data_reduction_proxy/core/common/data_reduction_proxy_switches.h',
+        'data_reduction_proxy/core/common/lofi_decider.h',
+        'data_reduction_proxy/core/common/lofi_ui_service.h',
      ],
   },
   'conditions': [
     # Small versions of libraries for Cronet.
     ['OS=="android"', {
       'targets' : [
          {
            # GN version: //components/data_reduction_proxy/core/browser:browser_small
            'target_name': 'data_reduction_proxy_core_browser_small',
            'type': 'static_library',
@@ skipping 31 matching lines @@
     }],
     ['OS!="ios"', {
       'targets' : [
         {
           # GN Version: //components/data_reduction_proxy/content
           'target_name': 'data_reduction_proxy_content',
           'type': 'static_library',
           'dependencies': [
             '../base/base.gyp:base',
             '../content/content.gyp:content_browser',
-            '../skia/skia.gyp:skia',
             '../ui/base/ui_base.gyp:ui_base',
             'components_resources.gyp:components_resources',
             'components_strings.gyp:components_strings',
           ],
           'include_dirs': [
             '..',
           ],
           'sources': [
             # Note: sources list duplicated in GN build.
             'data_reduction_proxy/content/browser/content_data_reduction_proxy_debug_ui_service.cc',
@@ skipping 22 matching lines @@
             'data_reduction_proxy/content/common/data_reduction_proxy_messages.h',
           ],
         },
         {
           # GN version: //components/data_reduction_proxy/content/browser
           'target_name': 'data_reduction_proxy_content_browser',
           'type': 'static_library',
           'dependencies': [
             '../content/content.gyp:content_common',
             '../ipc/ipc.gyp:ipc',
+            '../skia/skia.gyp:skia',
             'data_reduction_proxy_content_common',
           ],
           'include_dirs': [
             '..',
           ],
           'sources': [
+            'data_reduction_proxy/content/browser/content_lofi_ui_service.cc',
+            'data_reduction_proxy/content/browser/content_lofi_ui_service.h',
             'data_reduction_proxy/content/browser/content_lofi_decider.cc',
             'data_reduction_proxy/content/browser/content_lofi_decider.h',
             'data_reduction_proxy/content/browser/data_reduction_proxy_message_filter.cc',
             'data_reduction_proxy/content/browser/data_reduction_proxy_message_filter.h',
           ],
         },
       ],
     }],
   ],
   'targets': [
@@ skipping 131 matching lines @@
             '<@(_outputs)',
           ],
           'includes': [
             '../build/util/version.gypi',
           ],
         },
       ],
     },
   ],
 }