Move Singleton and related structs to namespace base

content/child/blink_platform_impl.cc

 // Copyright 2014 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 "content/child/blink_platform_impl.h"
 
 #include <math.h>
 
 #include <vector>
 
@@ skipping 96 matching lines @@
  private:
   scoped_ptr<base::WaitableEvent> impl_;
   DISALLOW_COPY_AND_ASSIGN(WebWaitableEventImpl);
 };
 
 // A simple class to cache the memory usage for a given amount of time.
 class MemoryUsageCache {
  public:
   // Retrieves the Singleton.
   static MemoryUsageCache* GetInstance() {
-    return Singleton<MemoryUsageCache>::get();
+    return base::Singleton<MemoryUsageCache>::get();
   }
 
   MemoryUsageCache() : memory_value_(0) { Init(); }
   ~MemoryUsageCache() {}
 
   void Init() {
     const unsigned int kCacheSeconds = 1;
     cache_valid_time_ = base::TimeDelta::FromSeconds(kCacheSeconds);
   }
 
@@ skipping 1237 matching lines @@
   return WebString::fromUTF8(ui::KeycodeConverter::DomCodeToCodeString(
       static_cast<ui::DomCode>(dom_code)));
 }
 
 int BlinkPlatformImpl::domEnumFromCodeString(const WebString& code) {
   return static_cast<int>(ui::KeycodeConverter::CodeStringToDomCode(
       code.utf8().data()));
 }
 
 }  // namespace content