Remove gfx::Canvas::DrawStringRectWithHalo.

ui/views/examples/text_example.h

 // Copyright (c) 2012 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 UI_VIEWS_EXAMPLES_TEXT_EXAMPLE_H_
 #define UI_VIEWS_EXAMPLES_TEXT_EXAMPLE_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 51 matching lines @@
 
   // Combo box to choose one of the sample texts.
   Combobox* text_cb_;
 
   // Check box to enable/disable multiline text drawing.
   Checkbox* multiline_checkbox_;
 
   // Check box to enable/disable character break behavior.
   Checkbox* break_checkbox_;
 
-  // Check box to enable/disable text halo.
-  Checkbox* halo_checkbox_;
-
   // Check box to enable/disable bold style.
   Checkbox* bold_checkbox_;
 
   // Check box to enable/disable italic style.
   Checkbox* italic_checkbox_;
 
   // Check box to enable/disable underline style.
   Checkbox* underline_checkbox_;
 
   // We create a model for each of the combobox, so we need to keep them
   // around until destruction time.
   std::vector<std::unique_ptr<ExampleComboboxModel>> example_combobox_model_;
 
   DISALLOW_COPY_AND_ASSIGN(TextExample);
 };
 
 }  // namespace examples
 }  // namespace views
 
 #endif  // UI_VIEWS_EXAMPLES_TEXT_EXAMPLE_H_