Move content's a plugin, ppapi_plugin, utility, and worker subdirectories to the content namespace.

content/worker/websharedworkerclient_proxy.cc

Index: content/worker/websharedworkerclient_proxy.cc
===================================================================
--- content/worker/websharedworkerclient_proxy.cc	(revision 163080)
+++ content/worker/websharedworkerclient_proxy.cc	(working copy)
@@ -33,6 +33,8 @@
 using WebKit::WebWorker;
 using WebKit::WebSharedWorkerClient;
 
+namespace content {
+
 // How long to wait for worker to finish after it's been told to terminate.
 #define kMaxTimeForRunawayWorkerSeconds 3
 
@@ -202,3 +204,5 @@
           weak_factory_.GetWeakPtr()),
       base::TimeDelta::FromSeconds(kMaxTimeForRunawayWorkerSeconds));
 }
+
+}  // namespace content