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

chrome/browser/ui/find_bar/find_bar_host_browsertest.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/file_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 30 matching lines @@
 #include "net/base/net_util.h"
 #include "ui/base/accelerators/accelerator.h"
 #include "ui/events/keycodes/keyboard_codes.h"
 
 #if defined(OS_WIN) && defined(USE_AURA)
 #include "content/public/browser/web_contents_view.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
 #endif
 
+using base::ASCIIToUTF16;
+using base::WideToUTF16;
 using content::NavigationController;
 using content::WebContents;
 
 namespace {
 
 const char kAnchorPage[] = "anchor.html";
 const char kAnchor[] = "#chapter2";
 const char kFramePage[] = "frames.html";
 const char kFrameData[] = "framedata_general.html";
 const char kUserSelectPage[] = "user-select.html";
@@ skipping 1617 matching lines @@
   ASSERT_EQ(result, SIMPLEREGION);
   bool rects_equal =
       region_before.left == region_after.left &&
       region_before.top == region_after.top &&
       region_before.right == region_after.right &&
       region_before.bottom == region_after.bottom;
   ASSERT_FALSE(rects_equal);
 }
 
 #endif