Adding logic to prevent offline previews fallback to LoFi/Weblite

chrome/browser/previews/previews_infobar_delegate.cc

 // 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 "chrome/browser/previews/previews_infobar_delegate.h"
 
 #include "base/metrics/histogram_macros.h"
 #include "chrome/browser/android/android_theme_resources.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.h"
@@ skipping 137 matching lines @@
       web_contents->GetController().Reload(
           content::ReloadType::DISABLE_LOFI_MODE, true);
     else if (infobar_type_ == LOFI)
       web_contents->ReloadLoFiImages();
 
     auto* data_reduction_proxy_settings =
         DataReductionProxyChromeSettingsFactory::GetForBrowserContext(
             web_contents->GetBrowserContext());
     data_reduction_proxy_settings->IncrementLoFiUserRequestsForImages();
   } else if (infobar_type_ == OFFLINE) {
-    web_contents->GetController().Reload(content::ReloadType::NORMAL, true);
+    // Prevent LoFi and lite page modes from showing after reload.
+    // TODO(ryansturm): rename DISABLE_LOFI_MODE to DISABLE_PREVIEWS.
+    //  crbug.com/707272
+    web_contents->GetController().Reload(content::ReloadType::DISABLE_LOFI_MODE,
+                                         true);
   }
 
   return true;
 }