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

chrome/browser/android/contextualsearch/resolved_search_term.h

 // 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.
 
 #ifndef CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_RESOLVED_SEARCH_TERM_H_
 #define CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_RESOLVED_SEARCH_TERM_H_
 
 #include <string>
 
 #include "base/macros.h"
 
 // Encapsulates the various parts of a Resolved Search Term, which tells
 // Contextual Search what to search for and how that term appears in the
 // surrounding text.
 struct ResolvedSearchTerm {
  public:
   explicit ResolvedSearchTerm(int response_code);
   ResolvedSearchTerm(bool is_invalid,
                      int response_code,
                      const std::string& search_term,
                      const std::string& display_text,
                      const std::string& alternate_term,
                      const std::string& mid,
                      bool prevent_preload,
                      int selection_start_adjust,
                      int selection_end_adjust,
-                     const std::string& context_language);
+                     const std::string& context_language,
+                     const std::string& thumbnail_url);
   ~ResolvedSearchTerm();
 
   const bool is_invalid;
   const int response_code;
   // Use strings, rather than just references, to keep this complete.
   const std::string search_term;
   const std::string display_text;
   const std::string alternate_term;
   const std::string mid;  // Mid (entity ID), or empty.
   const bool prevent_preload;
   const int selection_start_adjust;
   const int selection_end_adjust;
   const std::string context_language;
+  const std::string thumbnail_url;
 
   DISALLOW_COPY_AND_ASSIGN(ResolvedSearchTerm);
 };
 
 #endif  // CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_RESOLVED_SEARCH_TERM_H_