Remove unnecessary backend_ tests in SQLiteServerBoundCertStore and SQLitePersistentCookieStore.

chrome/browser/net/sqlite_server_bound_cert_store.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/browser/net/sqlite_server_bound_cert_store.h"
 
 #include <list>
 #include <set>
 
 #include "base/basictypes.h"
@@ skipping 533 matching lines @@
     : backend_(new Backend(path, clear_on_exit_policy)) {
 }
 
 bool SQLiteServerBoundCertStore::Load(
     std::vector<net::DefaultServerBoundCertStore::ServerBoundCert*>* certs) {
   return backend_->Load(certs);
 }
 
 void SQLiteServerBoundCertStore::AddServerBoundCert(
     const net::DefaultServerBoundCertStore::ServerBoundCert& cert) {
-  if (backend_.get())
-    backend_->AddServerBoundCert(cert);
+  backend_->AddServerBoundCert(cert);
 }
 
 void SQLiteServerBoundCertStore::DeleteServerBoundCert(
     const net::DefaultServerBoundCertStore::ServerBoundCert& cert) {
-  if (backend_.get())
-    backend_->DeleteServerBoundCert(cert);
+  backend_->DeleteServerBoundCert(cert);
 }
 
 void SQLiteServerBoundCertStore::SetForceKeepSessionState() {
-  if (backend_.get())
-    backend_->SetForceKeepSessionState();
+  backend_->SetForceKeepSessionState();
 }
 
 void SQLiteServerBoundCertStore::Flush(const base::Closure& completion_task) {
-  if (backend_.get())
-    backend_->Flush(completion_task);
-  else if (!completion_task.is_null())
-    MessageLoop::current()->PostTask(FROM_HERE, completion_task);
+  backend_->Flush(completion_task);
 }
 
 SQLiteServerBoundCertStore::~SQLiteServerBoundCertStore() {
-  if (backend_.get()) {
-    backend_->Close();
-    // Release our reference, it will probably still have a reference if the
-    // background thread has not run Close() yet.
-    backend_ = NULL;
-  }
+  backend_->Close();
+  // We release our reference to the Backend, though it will probably still have
+  // a reference if the background thread has not run Close() yet.
 }