Fix corners of find bar view by using BubbleBackground instead of a

chrome/browser/ui/views/find_bar_view.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 CHROME_BROWSER_UI_VIEWS_FIND_BAR_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_FIND_BAR_VIEW_H_
 
 #include <memory>
 
 #include "base/compiler_specific.h"
@@ skipping 52 matching lines @@
   void UpdateForResult(const FindNotificationDetails& result,
                        const base::string16& find_text);
 
   // Clears the current Match Count value in the Find text box.
   void ClearMatchCount();
 
   // Claims focus for the text field and selects its contents.
   void SetFocusAndSelection(bool select_all) override;
 
   // DropdownBarView:
-  void OnPaintBackground(gfx::Canvas* canvas) override;
   void Layout() override;
   gfx::Size GetPreferredSize() const override;
 
   // views::VectorIconButtonDelegate:
   void ButtonPressed(views::Button* sender, const ui::Event& event) override;
   SkColor GetVectorIconBaseColor() const override;
 
   // views::TextfieldController:
   bool HandleKeyEvent(views::Textfield* sender,
                       const ui::KeyEvent& key_event) override;
@@ skipping 35 matching lines @@
   views::VectorIconButton* find_next_button_;
   views::VectorIconButton* close_button_;
 
   // The preferred height of the find bar.
   int preferred_height_;
 
   DISALLOW_COPY_AND_ASSIGN(FindBarView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FIND_BAR_VIEW_H_