Add a new GetInstance() method for singleton classes under chrome/service and /net.

net/websockets/websocket_job.cc

Index: net/websockets/websocket_job.cc
diff --git a/net/websockets/websocket_job.cc b/net/websockets/websocket_job.cc
index a1e2dde4513f504fa78b66581eede230e7546c69..9e3ad3c7ea2f95e783e4ee8035b8de49ea4983c1 100644
--- a/net/websockets/websocket_job.cc
+++ b/net/websockets/websocket_job.cc
@@ -144,8 +144,8 @@ void WebSocketJob::RestartWithAuth(
 
 void WebSocketJob::DetachDelegate() {
   state_ = CLOSED;
-  Singleton<WebSocketThrottle>::get()->RemoveFromQueue(this);
-  Singleton<WebSocketThrottle>::get()->WakeupSocketIfNecessary();
+  WebSocketThrottle::GetInstance()->RemoveFromQueue(this);
+  WebSocketThrottle::GetInstance()->WakeupSocketIfNecessary();
 
   scoped_refptr<WebSocketJob> protect(this);
 
@@ -165,7 +165,7 @@ int WebSocketJob::OnStartOpenConnection(
   DCHECK(!callback_);
   state_ = CONNECTING;
   addresses_.Copy(socket->address_list().head(), true);
-  Singleton<WebSocketThrottle>::get()->PutInQueue(this);
+  WebSocketThrottle::GetInstance()->PutInQueue(this);
   if (!waiting_)
     return OK;
   callback_ = callback;
@@ -237,8 +237,8 @@ void WebSocketJob::OnReceivedData(
 
 void WebSocketJob::OnClose(SocketStream* socket) {
   state_ = CLOSED;
-  Singleton<WebSocketThrottle>::get()->RemoveFromQueue(this);
-  Singleton<WebSocketThrottle>::get()->WakeupSocketIfNecessary();
+  WebSocketThrottle::GetInstance()->RemoveFromQueue(this);
+  WebSocketThrottle::GetInstance()->WakeupSocketIfNecessary();
 
   scoped_refptr<WebSocketJob> protect(this);
 
@@ -405,8 +405,8 @@ void WebSocketJob::SaveNextCookie() {
 
     handshake_response_.reset();
 
-    Singleton<WebSocketThrottle>::get()->RemoveFromQueue(this);
-    Singleton<WebSocketThrottle>::get()->WakeupSocketIfNecessary();
+    WebSocketThrottle::GetInstance()->RemoveFromQueue(this);
+    WebSocketThrottle::GetInstance()->WakeupSocketIfNecessary();
     return;
   }