Adds Lo-Fi fallback support for new Data Reduction Proxy protocol.

content/renderer/render_frame_impl_browsertest.cc

 // 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.
 
 #include <stdint.h>
 
 #include "base/command_line.h"
 #include "base/debug/leak_annotations.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 486 matching lines @@
   } tests[] = {
       // With no previews enabled for the frame, no previews should be
       // activated.
       {PREVIEWS_UNSPECIFIED, false, WebURLRequest::kPreviewsUnspecified, false},
 
       // If the request already has a previews state set, then Client Lo-Fi
       // should only be used if the request already has that bit set.
       {CLIENT_LOFI_ON, false, WebURLRequest::kServerLoFiOn, false},
       {PREVIEWS_UNSPECIFIED, false, WebURLRequest::kClientLoFiOn, true},
       {CLIENT_LOFI_ON, false, WebURLRequest::kClientLoFiOn, true},
+      {CLIENT_LOFI_ON | SERVER_LITE_PAGE_ON, true,
+       WebURLRequest::kPreviewsUnspecified, true},
+      {CLIENT_LOFI_ON | SERVER_LITE_PAGE_ON, false,
+       WebURLRequest::kPreviewsUnspecified, true},
 
       // If Client Lo-Fi isn't enabled for the frame, then it shouldn't be used
       // for any requests.
       {SERVER_LOFI_ON, true, WebURLRequest::kPreviewsUnspecified, false},
 
-      // SERVER_LITE_PAGE_ON, PREVIEWS_NO_TRANSFORM, and PREVIEWS_OFF should
-      // take precedence over Client Lo-Fi.
-      {CLIENT_LOFI_ON | SERVER_LITE_PAGE_ON, false,
-       WebURLRequest::kPreviewsUnspecified, false},
-      {CLIENT_LOFI_ON | SERVER_LITE_PAGE_ON, true,
-       WebURLRequest::kPreviewsUnspecified, false},
+      // PREVIEWS_NO_TRANSFORM and PREVIEWS_OFF should take precedence
+      // over Client Lo-Fi.
       {CLIENT_LOFI_ON | PREVIEWS_NO_TRANSFORM, false,
        WebURLRequest::kPreviewsUnspecified, false},
       {CLIENT_LOFI_ON | PREVIEWS_OFF, false,
        WebURLRequest::kPreviewsUnspecified, false},
 
       // If both Server Lo-Fi and Client Lo-Fi are enabled for the frame, then
       // only https:// requests should use Client Lo-Fi.
       {CLIENT_LOFI_ON | SERVER_LOFI_ON, false,
        WebURLRequest::kPreviewsUnspecified, false},
       {CLIENT_LOFI_ON | SERVER_LOFI_ON, true,
@@ skipping 13 matching lines @@
         GURL(test.is_https ? "https://example.com" : "http://example.com"));
     request.SetPreviewsState(test.initial_request_previews_state);
 
     EXPECT_EQ(test.expected_should_use_client_lo_fi_for_request,
               frame()->ShouldUseClientLoFiForRequest(request))
         << (&test - tests);
   }
 }
 
 }  // namespace content