Change other usages of .size() to .empty() when applicable.

chrome/browser/ui/toolbar/encoding_menu_controller_unittest.cc

 // Copyright (c) 2009 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/toolbar/encoding_menu_controller.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "chrome/app/chrome_command_ids.h"
@@ skipping 34 matching lines @@
 TEST_F(EncodingMenuControllerTest, ListEncodingMenuItems) {
   typedef EncodingMenuController::EncodingMenuItemList EncodingMenuItemList;
   EncodingMenuController controller;
 
   EncodingMenuItemList english_items;
   TestingProfile profile_en;
 
   controller.GetEncodingMenuItems(&profile_en, &english_items);
 
   // Make sure there are items in the lists.
-  ASSERT_TRUE(english_items.size() > 0);
+  ASSERT_FALSE(english_items.empty());
   // Make sure that autodetect is the first item on both menus
   ASSERT_EQ(english_items[0].first, IDC_ENCODING_AUTO_DETECT);
 }
 
 TEST_F(EncodingMenuControllerTest, IsItemChecked) {
   TestingProfile profile_en;
   std::string encoding("UTF-8");
 
   // Check that enabling and disabling autodetect works.
   bool autodetect_enabed[] = {true, false};
@@ skipping 18 matching lines @@
                                        encoding,
                                        valid_encodings[i]);
     // Only one item in the encoding menu can be selected at a time.
     ASSERT_FALSE(on && encoding_is_enabled);
     encoding_is_enabled |= on;
   }
 
   // Make sure at least one encoding is enabled.
   ASSERT_TRUE(encoding_is_enabled);
 }