Change Lo-Fi bool to bitmask to support multiple Previews types

content/browser/loader/mojo_async_resource_handler_unittest.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 "content/browser/loader/mojo_async_resource_handler.h"
 
 #include <string.h>
 
 #include <utility>
 
@@ skipping 123 matching lines @@
                            net::URLRequest* request,
                            ResourceContext* resource_context,
                            ResourceResponse* response) override {
     ADD_FAILURE() << "OnRequestRedirected should not be called.";
   }
 
   void RequestComplete(net::URLRequest* url_request) override {
     ADD_FAILURE() << "RequestComplete should not be called.";
   }
 
-  bool ShouldEnableLoFiMode(
+  int GetPreviewsState(
+      int previews_state,
       const net::URLRequest& url_request,
       content::ResourceContext* resource_context) override {
-    ADD_FAILURE() << "ShouldEnableLoFiMode should not be called.";
+    ADD_FAILURE() << "GetPreviewsState should not be called.";
     return false;
   }
 
   NavigationData* GetNavigationData(net::URLRequest* request) const override {
     ADD_FAILURE() << "GetNavigationData should not be called.";
     return nullptr;
   }
 
   std::unique_ptr<net::ClientCertStore> CreateClientCertStore(
       ResourceContext* resource_context) override {
@@ skipping 1112 matching lines @@
     }
   }
   EXPECT_EQ("B", body);
 }
 
 INSTANTIATE_TEST_CASE_P(MojoAsyncResourceHandlerWithAllocationSizeTest,
                         MojoAsyncResourceHandlerWithAllocationSizeTest,
                         ::testing::Values(8, 32 * 2014));
 }  // namespace
 }  // namespace content