Move RemoveChars, ReplaceChars, TrimString, and TruncateUTF8ToByteSize to base namespace.

ash/system/user/tray_user.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 "ash/system/user/tray_user.h"
 
 #include <algorithm>
 #include <climits>
 #include <vector>
 
@@ skipping 463 matching lines @@
   const bool rtl = base::i18n::IsRTL();
   set_border(views::Border::CreateEmptyBorder(
       kUserDetailsVerticalPadding, rtl ? 0 : inner_padding,
       kUserDetailsVerticalPadding, rtl ? inner_padding : 0));
 
   // Retrieve the user's display name and wrap it with markers.
   // Note that since this is a public account it always has to be the primary
   // user.
   base::string16 display_name =
       Shell::GetInstance()->session_state_delegate()->GetUserDisplayName(0);
-  RemoveChars(display_name, kDisplayNameMark, &display_name);
+  base::RemoveChars(display_name, kDisplayNameMark, &display_name);
   display_name = kDisplayNameMark[0] + display_name + kDisplayNameMark[0];
   // Retrieve the domain managing the device and wrap it with markers.
   base::string16 domain = UTF8ToUTF16(
       Shell::GetInstance()->system_tray_delegate()->GetEnterpriseDomain());
-  RemoveChars(domain, kDisplayNameMark, &domain);
+  base::RemoveChars(domain, kDisplayNameMark, &domain);
   base::i18n::WrapStringWithLTRFormatting(&domain);
   // Retrieve the label text, inserting the display name and domain.
   text_ = l10n_util::GetStringFUTF16(IDS_ASH_STATUS_TRAY_PUBLIC_LABEL,
                                      display_name, domain);
 
   learn_more_ = new views::Link(l10n_util::GetStringUTF16(IDS_ASH_LEARN_MORE));
   learn_more_->SetUnderline(false);
   learn_more_->set_listener(this);
   AddChildView(learn_more_);
 
@@ skipping 913 matching lines @@
       internal::GetRootWindowController(
           system_tray()->GetWidget()->GetNativeWindow()->GetRootWindow());
   if (controller && controller->shelf()) {
     UpdateAfterShelfAlignmentChange(
         controller->GetShelfLayoutManager()->GetAlignment());
   }
 }
 
 }  // namespace internal
 }  // namespace ash