Update some uses of UTF conversions in chrome/browser to use the base:: namespace.

chrome/browser/status_icons/status_tray_unittest.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 "base/compiler_specific.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/status_icons/status_icon.h"
 #include "chrome/browser/status_icons/status_tray.h"
 #include "grit/chrome_unscaled_resources.h"
@@ skipping 23 matching lines @@
 
   const StatusIcons& GetStatusIconsForTest() const { return status_icons(); }
 };
 
 TEST(StatusTrayTest, Create) {
   // Check for creation and leaks.
   TestStatusTray tray;
   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
   gfx::ImageSkia* image = rb.GetImageSkiaNamed(IDR_STATUS_TRAY_ICON);
   tray.CreateStatusIcon(
-      StatusTray::OTHER_ICON, *image, ASCIIToUTF16("tool tip"));
+      StatusTray::OTHER_ICON, *image, base::ASCIIToUTF16("tool tip"));
   EXPECT_EQ(1U, tray.GetStatusIconsForTest().size());
 }
 
 // Make sure that removing an icon removes it from the list.
 TEST(StatusTrayTest, CreateRemove) {
   TestStatusTray tray;
   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
   gfx::ImageSkia* image = rb.GetImageSkiaNamed(IDR_STATUS_TRAY_ICON);
   StatusIcon* icon = tray.CreateStatusIcon(
-      StatusTray::OTHER_ICON, *image, ASCIIToUTF16("tool tip"));
+      StatusTray::OTHER_ICON, *image, base::ASCIIToUTF16("tool tip"));
   EXPECT_EQ(1U, tray.GetStatusIconsForTest().size());
   tray.RemoveStatusIcon(icon);
   EXPECT_EQ(0U, tray.GetStatusIconsForTest().size());
 }