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

chrome/browser/apps/app_browsertest.cc

 // Copyright 2013 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 "apps/launcher.h"
 #include "apps/shell_window.h"
 #include "apps/shell_window_registry.h"
 #include "apps/ui/native_app_window.h"
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 315 matching lines @@
 
   // Wait for the extension to tell us it's initialized its context menus and
   // launched a window.
   ASSERT_TRUE(launched_listener.WaitUntilSatisfied());
 
   // The context_menu app has one context menu item. This, along with a
   // separator and the developer tools, is all that should be in the menu.
   WebContents* web_contents = GetFirstShellWindowWebContents();
   ASSERT_TRUE(web_contents);
   content::ContextMenuParams params;
-  params.selection_text = ASCIIToUTF16("Hello World");
+  params.selection_text = base::ASCIIToUTF16("Hello World");
   scoped_ptr<PlatformAppContextMenu> menu;
   menu.reset(new PlatformAppContextMenu(web_contents, params));
   menu->Init();
   ASSERT_TRUE(menu->HasCommandWithId(IDC_EXTENSIONS_CONTEXT_CUSTOM_FIRST));
   ASSERT_TRUE(menu->HasCommandWithId(IDC_CONTENT_CONTEXT_INSPECTELEMENT));
   ASSERT_TRUE(
       menu->HasCommandWithId(IDC_CONTENT_CONTEXT_INSPECTBACKGROUNDPAGE));
   ASSERT_TRUE(menu->HasCommandWithId(IDC_CONTENT_CONTEXT_RELOAD_PACKAGED_APP));
   ASSERT_FALSE(menu->HasCommandWithId(IDC_CONTENT_CONTEXT_UNDO));
   ASSERT_TRUE(menu->HasCommandWithId(IDC_CONTENT_CONTEXT_COPY));
@@ skipping 940 matching lines @@
                                                           false);
   ASSERT_TRUE(restart_requested_listener.WaitUntilSatisfied());
 
   EXPECT_EQ(1, request_restart_call_count());
 }
 
 #endif  // defined(OS_CHROMEOS)
 
 
 }  // namespace extensions