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

chrome/browser/android/contextualsearch/contextual_search_delegate.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_CONTEXTUAL_SEARCH_DELEGATE_H_
 #define CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_CONTEXTUAL_SEARCH_DELEGATE_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 174 matching lines @@
 
   // Decodes the given json response string and extracts parameters.
   void DecodeSearchTermFromJsonResponse(const std::string& response,
                                         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* context_language,
+                                        std::string* thumbnail_url);
 
   // Extracts the start and end location from a mentions list, and sets the
   // integers referenced by |startResult| and |endResult|.
   void ExtractMentionsStartEnd(const base::ListValue& mentions_list,
                                int* startResult,
                                int* endResult);
 
   // Generates a subset of the given surrounding_text string, for Icing
   // integration.
   // |surrounding_text| the entire text context that contains the selection.
@@ skipping 32 matching lines @@
   // The callback for notifications of Icing selection being available.
   IcingCallback icing_callback_;
 
   // Used to hold the context until an upcoming search term request is started.
   std::unique_ptr<ContextualSearchContext> context_;
 
   DISALLOW_COPY_AND_ASSIGN(ContextualSearchDelegate);
 };
 
 #endif  // CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_CONTEXTUAL_SEARCH_DELEGATE_H_