Switch to doing user-resizing via system for panels on Mac

chrome/browser/ui/panels/panel.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 "chrome/browser/ui/panels/panel.h"
 
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
@@ skipping 649 matching lines @@
 
 void Panel::SetAlwaysOnTop(bool on_top) {
   native_panel_->SetPanelAlwaysOnTop(on_top);
 }
 
 void Panel::SetPreviewMode(bool in_preview) {
   DCHECK_NE(in_preview_mode_, in_preview);
   in_preview_mode_ = in_preview;
 }
 
-void Panel::EnableResizeByMouse(bool enable) {
-  DCHECK(native_panel_);
-  native_panel_->EnableResizeByMouse(enable);
-}
-
 void Panel::UpdateMinimizeRestoreButtonVisibility() {
   native_panel_->UpdatePanelMinimizeRestoreButtonVisibility();
 }
 
 gfx::Size Panel::ClampSize(const gfx::Size& size) const {
   // The panel width:
   // * cannot grow or shrink to go beyond [min_width, max_width]
   int new_width = size.width();
   if (new_width > max_size_.width())
     new_width = max_size_.width();
@@ skipping 209 matching lines @@
 
 // static
 void Panel::FormatTitleForDisplay(string16* title) {
   size_t current_index = 0;
   size_t match_index;
   while ((match_index = title->find(L'\n', current_index)) != string16::npos) {
     title->replace(match_index, 1, string16());
     current_index = match_index;
   }
 }