Move a bunch of code in content\renderer to the content namespace.

content/renderer/dom_storage/webstoragearea_impl.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 "content/renderer/dom_storage/webstoragearea_impl.h"
 
 #include "base/lazy_instance.h"
 #include "base/metrics/histogram.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
 #include "content/common/dom_storage_messages.h"
 #include "content/renderer/dom_storage/dom_storage_dispatcher.h"
 #include "content/renderer/render_thread_impl.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebURL.h"
 #include "webkit/dom_storage/dom_storage_cached_area.h"
 
 using dom_storage::DomStorageCachedArea;
 using WebKit::WebString;
 using WebKit::WebURL;
 
+namespace content {
+
 namespace {
 typedef IDMap<WebStorageAreaImpl> AreaImplMap;
 base::LazyInstance<AreaImplMap>::Leaky
     g_all_areas_map = LAZY_INSTANCE_INITIALIZER;
 
 DomStorageDispatcher* dispatcher() {
   return RenderThreadImpl::current()->dom_storage_dispatcher();
 }
 }  // namespace
 
@@ skipping 42 matching lines @@
   cached_area_->RemoveItem(connection_id_, key, page_url);
 }
 
 void WebStorageAreaImpl::clear(const WebURL& page_url) {
   cached_area_->Clear(connection_id_, page_url);
 }
 
 size_t WebStorageAreaImpl::memoryBytesUsedByCache() const {
   return cached_area_->MemoryBytesUsedByCache();
 }
+
+}  // namespace content