Move a bunch of code in content\common (as well as a few left in renderer) to the content namespace.

content/common/indexed_db/proxy_webidbindex_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/common/indexed_db/proxy_webidbindex_impl.h"
 
 #include "content/common/indexed_db/indexed_db_dispatcher.h"
 #include "content/common/indexed_db/indexed_db_messages.h"
 #include "content/common/indexed_db/proxy_webidbtransaction_impl.h"
 #include "content/common/child_thread.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBKeyPath.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebString.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebVector.h"
 
-using content::IndexedDBKeyPath;
-using content::IndexedDBKeyRange;
 using WebKit::WebExceptionCode;
 using WebKit::WebDOMStringList;
 using WebKit::WebIDBKeyPath;
 using WebKit::WebString;
 using WebKit::WebVector;
 
+namespace content {
+
 RendererWebIDBIndexImpl::RendererWebIDBIndexImpl(int32 idb_index_id)
     : idb_index_id_(idb_index_id) {
 }
 
 RendererWebIDBIndexImpl::~RendererWebIDBIndexImpl() {
   // It's not possible for there to be pending callbacks that address this
   // object since inside WebKit, they hold a reference to the object wich owns
   // this object. But, if that ever changed, then we'd need to invalidate
   // any such pointers.
   IndexedDBDispatcher::Send(new IndexedDBHostMsg_IndexDestroyed(
@@ skipping 51 matching lines @@
     const WebKit::WebIDBKeyRange& key_range,
     WebKit::WebIDBCallbacks* callbacks,
     const WebKit::WebIDBTransaction& transaction,
     WebExceptionCode& ec) {
   IndexedDBDispatcher* dispatcher =
       IndexedDBDispatcher::ThreadSpecificInstance();
   dispatcher->RequestIDBIndexGetKey(
       IndexedDBKeyRange(key_range), callbacks, idb_index_id_,
       transaction, &ec);
 }
+
+}  // namespace content