Pure pedantry: Replace all ".size() == 0" with ".empty()".

chrome/browser/ui/views/extensions/extension_install_prompt2.cc

 // Copyright (c) 2011 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 "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/browser_window.h"
 #include "chrome/browser/extensions/extension_install_ui.h"
 #include "chrome/browser/ui/views/window.h"
@@ skipping 126 matching lines @@
 
   heading_ = new views::Label(UTF16ToWide(
       l10n_util::GetStringFUTF16(IDS_EXTENSION_INSTALL_PROMPT_HEADING,
                                  UTF8ToUTF16(extension->name()))));
   heading_->SetFont(heading_->font().DeriveFont(kHeadingFontSizeDelta,
                                                 gfx::Font::BOLD));
   heading_->SetMultiLine(true);
   heading_->SetHorizontalAlignment(views::Label::ALIGN_LEFT);
   AddChildView(heading_);
 
-  if (permissions.size() == 0) {
+  if (permissions.empty()) {
     right_column_width_ = kNoPermissionsRightColumnWidth;
   } else {
     right_column_width_ = kPermissionBoxWidth;
     will_have_access_to_ = new views::Label(UTF16ToWide(
         l10n_util::GetStringUTF16(IDS_EXTENSION_PROMPT_WILL_HAVE_ACCESS_TO)));
     will_have_access_to_->SetMultiLine(true);
     will_have_access_to_->SetHorizontalAlignment(views::Label::ALIGN_LEFT);
     AddChildView(will_have_access_to_);
 
     permission_box_ = new views::View();
@@ skipping 162 matching lines @@
   BrowserWindow* window = browser->window();
   if (!window) {
     delegate->InstallUIAbort();
     return;
   }
 
   browser::CreateViewsWindow(window->GetNativeHandle(), gfx::Rect(),
       new InstallDialogContent2(delegate, extension, icon, permissions))
           ->Show();
 }