[Contextual Search] Fetch and display thumbnails returned in resolution response

chrome/browser/android/contextualsearch/contextual_search_delegate_unittest.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 "chrome/browser/android/contextualsearch/contextual_search_delegate.h"
 
 #include <stddef.h>
 
 #include <memory>
 
@@ skipping 487 matching lines @@
       "\"display_text\":\"Barack Obama\", \"mentions\":[0,15],"
       "\"selected_text\":\"obama\", \"resolved_term\":\"barack obama\"}";
   std::string search_term;
   std::string display_text;
   std::string alternate_term;
   std::string mid;
   std::string prevent_preload;
   int mention_start;
   int mention_end;
   std::string context_language;
+  std::string thumbnail_url;
   delegate_->DecodeSearchTermFromJsonResponse(
       json_with_escape, &search_term, &display_text, &alternate_term,
-      &mid, &prevent_preload, &mention_start, &mention_end, &context_language);
+      &mid, &prevent_preload, &mention_start, &mention_end, &context_language,
+      &thumbnail_url);
   EXPECT_EQ("obama", search_term);
   EXPECT_EQ("Barack Obama", display_text);
   EXPECT_EQ("barack obama", alternate_term);
   EXPECT_EQ("/m/02mjmr", mid);
   EXPECT_EQ("", prevent_preload);
   EXPECT_EQ("", context_language);
+  EXPECT_EQ("", thumbnail_url);
 }
 
 TEST_F(ContextualSearchDelegateTest, ResponseWithLanguage) {
   CreateDefaultSearchContextAndRequestSearchTerm();
   fetcher()->set_response_code(200);
   fetcher()->SetResponseString(
       "{\"mid\":\"/m/02mjmr\",\"search_term\":\"obama\","
       "\"mentions\":[0,15],\"prevent_preload\":\"1\", "
       "\"lang\":\"de\"}");
   fetcher()->delegate()->OnURLFetchComplete(fetcher());
 
   EXPECT_FALSE(is_invalid());
   EXPECT_EQ(200, response_code());
   EXPECT_EQ("obama", search_term());
   EXPECT_EQ("obama", display_text());
   EXPECT_EQ("/m/02mjmr", mid());
   EXPECT_TRUE(do_prevent_preload());
   EXPECT_EQ("de", context_language());
 }
 
 TEST_F(ContextualSearchDelegateTest, HeaderContainsBasePageUrl) {
   CreateDefaultSearchContextAndRequestSearchTerm();
   EXPECT_EQ(kSomeSpecificBasePage, getBasePageUrlFromRequest());
 }