Simplify some CloudPrintProxy code.

chrome/service/cloud_print/cloud_print_proxy.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 "chrome/service/cloud_print/cloud_print_proxy.h"
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 115 matching lines @@
   return true;
 }
 
 void CloudPrintProxy::UnregisterPrintersAndDisableForUser() {
   DCHECK(CalledOnValidThread());
   if (backend_.get()) {
     // Try getting auth and printers info from the backend.
     // We'll get notified in this case.
     backend_->UnregisterPrinters();
   } else {
-    // If no backend avaialble, disable connector immidiately.
+    // If no backend available, disable connector immediately.
     DisableForUser();
   }
 }
 
 void CloudPrintProxy::DisableForUser() {
   DCHECK(CalledOnValidThread());
   user_email_.clear();
   enabled_ = false;
   if (client_) {
     client_->OnCloudPrintProxyDisabled(true);
@@ skipping 98 matching lines @@
 }
 
 void CloudPrintProxy::ShutdownBackend() {
   DCHECK(CalledOnValidThread());
   if (backend_.get())
     backend_->Shutdown();
   backend_.reset();
 }
 
 }  // namespace cloud_print