Remove stl_util's deletion function use from ui/.

ui/chromeos/ime/candidate_window_view_unittest.cc

 // Copyright 2014 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 "ui/chromeos/ime/candidate_window_view.h"
 
 #include <stddef.h>
 
 #include <string>
 
@@ skipping 77 matching lines @@
 
   int selected_candidate_index_in_page() {
     return candidate_window_view_->selected_candidate_index_in_page_;
   }
 
   size_t GetCandidatesSize() const {
     return candidate_window_view_->candidate_views_.size();
   }
 
   CandidateView* GetCandidateAt(size_t i) {
-    return candidate_window_view_->candidate_views_[i];
+    return candidate_window_view_->candidate_views_[i].get();
   }
 
   void SelectCandidateAt(int index_in_page) {
     candidate_window_view_->SelectCandidateAt(index_in_page);
   }
 
   void MaybeInitializeCandidateViews(
       const ui::CandidateWindow& candidate_window) {
     candidate_window_view_->MaybeInitializeCandidateViews(candidate_window);
   }
@@ skipping 277 matching lines @@
   // Check the selected index is invalidated.
   EXPECT_EQ(-1, selected_candidate_index_in_page());
   EXPECT_EQ(before_height, GetCandidateAt(0)->GetContentsBounds().height());
   // Checks all entry have same row height.
   for (size_t i = 1; i < GetCandidatesSize(); ++i)
     EXPECT_EQ(before_height, GetCandidateAt(i)->GetContentsBounds().height());
 }
 
 }  // namespace ime
 }  // namespace ui