Call scoped_refptr<T>::get() rather than relying on implicit "operator T*"

chrome/browser/extensions/extension_apitest.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/extensions/extension_apitest.h"
 
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/extensions/api/test/test_api.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ skipping 263 matching lines @@
       continue;
 
     if (extension != NULL) {
       // TODO(yoz): this is misleading; it counts component extensions.
       message_ = base::StringPrintf(
           "Expected only one extension to be present.  Found %u.",
           static_cast<unsigned>(service->extensions()->size()));
       return NULL;
     }
 
-    extension = *it;
+    extension = it->get();
   }
 
   if (!extension) {
     message_ = "extension pointer is NULL.";
     return NULL;
   }
   return extension;
 }
 
 bool ExtensionApiTest::StartTestServer() {
@@ skipping 22 matching lines @@
   test_config_->SetInteger(kTestWebSocketPort,
                            websocket_server_->host_port_pair().port());
 
   return true;
 }
 
 void ExtensionApiTest::SetUpCommandLine(CommandLine* command_line) {
   ExtensionBrowserTest::SetUpCommandLine(command_line);
   test_data_dir_ = test_data_dir_.AppendASCII("api_test");
 }