Remove unnecessary Border subclasses where we can achieve the same functionality

ui/views/controls/button/text_button.cc

 // 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.
 
 #include "ui/views/controls/button/text_button.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "grit/ui_resources.h"
@@ skipping 56 matching lines @@
 
 
 // TextButtonBorder -----------------------------------------------------------
 
 TextButtonBorder::TextButtonBorder() {
 }
 
 TextButtonBorder::~TextButtonBorder() {
 }
 
+void TextButtonBorder::Paint(const View& view, gfx::Canvas* canvas) {
+}
+
 gfx::Insets TextButtonBorder::GetInsets() const {
   return insets_;
 }
 
 void TextButtonBorder::SetInsets(const gfx::Insets& insets) {
   insets_ = insets;
 }
 
 TextButtonBorder* TextButtonBorder::AsTextButtonBorder() {
   return this;
@@ skipping 625 matching lines @@
   if (show_multiple_icon_states_) {
     if (has_hover_icon_ && (state() == STATE_HOVERED))
       return icon_hover_;
     if (has_pushed_icon_ && (state() == STATE_PRESSED))
       return icon_pushed_;
   }
   return icon_;
 }
 
 }  // namespace views