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

content/common/indexed_db/indexed_db_message_filter.cc

Index: content/common/indexed_db/indexed_db_message_filter.cc
===================================================================
--- content/common/indexed_db/indexed_db_message_filter.cc	(revision 163290)
+++ content/common/indexed_db/indexed_db_message_filter.cc	(working copy)
@@ -13,6 +13,8 @@
 
 using webkit_glue::WorkerTaskRunner;
 
+namespace content {
+
 IndexedDBMessageFilter::IndexedDBMessageFilter() :
     main_thread_loop_proxy_(base::MessageLoopProxy::current()) {
 }
@@ -35,3 +37,5 @@
 void IndexedDBMessageFilter::DispatchMessage(const IPC::Message& msg) {
   IndexedDBDispatcher::ThreadSpecificInstance()->OnMessageReceived(msg);
 }
+
+}  // namespace content