[TTS] Update Contextual Cards response decoding for v1.

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 184 matching lines @@
                                         std::string* context_language,
                                         std::string* thumbnail_url,
                                         std::string* caption);
 
   // 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);
 
-  // Decodes the Contextual Cards (Now on Tap) response from the given
-  // dictionary, and sets the subtitle and/or thumbnail if they are present.
-  void DecodeContextualCardsResponse(const base::DictionaryValue& dict,
-                                     std::string* subtitle,
-                                     std::string* thumbnail);
-
   // Generates a subset of the given surrounding_text string, for Icing
   // integration.
   // |surrounding_text| the entire text context that contains the selection.
   // |padding_each_side| the number of characters of padding desired on each
   // side of the selection (negative values treated as 0).
   // |start| the start offset of the selection, updated to reflect the new
   // position
   // of the selection in the function result.
   // |end| the end offset of the selection, updated to reflect the new position
   // of the selection in the function result.
@@ skipping 25 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_