predictors: Take RESOURCE_TYPE_XHR into account.

chrome/browser/predictors/resource_prefetch_predictor_unittest.cc

 // 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.
 
 #include "chrome/browser/predictors/resource_prefetch_predictor.h"
 
 #include <iostream>
 #include <memory>
 #include <utility>
 
@@ skipping 1145 matching lines @@
   EXPECT_TRUE(ResourcePrefetchPredictor::IsHandledResourceType(
       content::RESOURCE_TYPE_PREFETCH, "text/css"));
   EXPECT_FALSE(ResourcePrefetchPredictor::IsHandledResourceType(
       content::RESOURCE_TYPE_PREFETCH, "bogus/mime-type"));
   EXPECT_FALSE(ResourcePrefetchPredictor::IsHandledResourceType(
       content::RESOURCE_TYPE_PREFETCH, ""));
   EXPECT_TRUE(ResourcePrefetchPredictor::IsHandledResourceType(
       content::RESOURCE_TYPE_PREFETCH, "application/font-woff"));
   EXPECT_TRUE(ResourcePrefetchPredictor::IsHandledResourceType(
       content::RESOURCE_TYPE_PREFETCH, "font/woff2"));
+  EXPECT_FALSE(ResourcePrefetchPredictor::IsHandledResourceType(
+      content::RESOURCE_TYPE_XHR, ""));
+  EXPECT_FALSE(ResourcePrefetchPredictor::IsHandledResourceType(
+      content::RESOURCE_TYPE_XHR, "bogus/mime-type"));
+  EXPECT_TRUE(ResourcePrefetchPredictor::IsHandledResourceType(
+      content::RESOURCE_TYPE_XHR, "application/javascript"));
 }
 
 TEST_F(ResourcePrefetchPredictorTest, ShouldRecordRequestMainFrame) {
   std::unique_ptr<net::URLRequest> http_request =
       CreateURLRequest(GURL("http://www.google.com"), net::MEDIUM,
                        content::RESOURCE_TYPE_IMAGE, 1, 1, true);
   EXPECT_TRUE(ResourcePrefetchPredictor::ShouldRecordRequest(
       http_request.get(), content::RESOURCE_TYPE_MAIN_FRAME));
 
   std::unique_ptr<net::URLRequest> https_request =
@@ skipping 367 matching lines @@
                          net::MEDIUM, false, false);
   predictor_->url_table_cache_->insert(
       std::make_pair(www_google_url.primary_key(), www_google_url));
 
   urls.clear();
   EXPECT_TRUE(predictor_->GetPrefetchData(main_frame_url, &urls));
   EXPECT_THAT(urls, UnorderedElementsAre(GURL(font_url)));
 }
 
 }  // namespace predictors