Move Singleton and related structs to namespace base

content/browser/renderer_host/text_input_client_mac.mm

 // 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.
 
 #import "content/browser/renderer_host/text_input_client_mac.h"
 
 #include "base/memory/singleton.h"
 #include "base/metrics/histogram.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/time/time.h"
@@ skipping 12 matching lines @@
     : character_index_(NSNotFound),
       lock_(),
       condition_(&lock_) {
 }
 
 TextInputClientMac::~TextInputClientMac() {
 }
 
 // static
 TextInputClientMac* TextInputClientMac::GetInstance() {
-  return Singleton<TextInputClientMac>::get();
+  return base::Singleton<TextInputClientMac>::get();
 }
 
 void TextInputClientMac::GetStringAtPoint(
     RenderWidgetHost* rwh,
     gfx::Point point,
     void (^replyHandler)(NSAttributedString*, NSPoint)) {
   DCHECK(replyHandler_.get() == nil);
   replyHandler_.reset(replyHandler, base::scoped_policy::RETAIN);
   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(rwh);
   rwhi->Send(new TextInputClientMsg_StringAtPoint(rwhi->GetRoutingID(), point));
@@ skipping 105 matching lines @@
   character_index_ = NSNotFound;
   first_rect_ = NSZeroRect;
   substring_.reset();
 }
 
 void TextInputClientMac::AfterRequest() {
   lock_.Release();
 }
 
 }  // namespace content