[TTS] Extract tapped text before showing UI.

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 <algorithm>
 #include <memory>
@@ skipping 73 matching lines @@
     base::string16 surrounding = base::UTF8ToUTF16("Barack Obama just spoke.");
     CreateSearchContextAndRequestSearchTerm("Barack Obama", surrounding, 0, 6);
   }
 
   void CreateSearchContextAndRequestSearchTerm(
       const std::string& selected_text,
       const base::string16& surrounding_text,
       int start_offset,
       int end_offset) {
     test_context_ = new ContextualSearchContext(
-        selected_text, std::string(), GURL(kSomeSpecificBasePage), "utf-8");
+        std::string(), GURL(kSomeSpecificBasePage), "utf-8");
     // ContextualSearchDelegate class takes ownership of the context.
     delegate_->SetContextForTesting(test_context_->GetWeakPtr());
 
     test_context_->SetSelectionSurroundings(start_offset, end_offset,
                                             surrounding_text);
     delegate_->ResolveSearchTermFromContext();
     fetcher_ = test_factory_.GetFetcherByID(
         ContextualSearchDelegate::kContextualSearchURLFetcherID);
     ASSERT_TRUE(fetcher_);
     ASSERT_TRUE(fetcher());
@@ skipping 65 matching lines @@
           "\"mentions\":[" + mentions_start + ","+ mentions_end + "],"
           "\"selected_text\":\"" + selected_text + "\","
           "\"resolved_term\":\"barack obama\"}");
       fetcher()->delegate()->OnURLFetchComplete(fetcher());
   }
 
   void SetSurroundingContext(const base::string16& surrounding_text,
                              int start_offset,
                              int end_offset) {
     test_context_ = new ContextualSearchContext(
-        "Bogus", std::string(), GURL(kSomeSpecificBasePage), "utf-8");
+        std::string(), GURL(kSomeSpecificBasePage), "utf-8");
     test_context_->SetSelectionSurroundings(start_offset, end_offset,
                                             surrounding_text);
     // ContextualSearchDelegate class takes ownership of the context.
     delegate_->SetContextForTesting(test_context_->GetWeakPtr());
   }
 
   // Gets the Client Discourse Context proto from the request header.
   discourse_context::ClientDiscourseContext GetDiscourseContextFromRequest() {
     discourse_context::ClientDiscourseContext cdc;
     // Make sure we can get the actual raw headers from the fake fetcher.
@@ skipping 450 matching lines @@
   DestroyTestContext();
   CallOnURLFetchComplete();
 }
 
 // Test that we can destroy the context while gathering surrounding text.
 TEST_F(ContextualSearchDelegateTest, DestroyContextDuringGatherSurroundings) {
   CreateTestContext();
   DestroyTestContext();
   CallOnTextSurroundingSelectionAvailable();
 }