Eliminate implicit conversion from scoped_refptr<T> to T*

webkit/plugins/npapi/plugin_host.cc

 // Copyright (c) 2011 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 "webkit/plugins/npapi/plugin_host.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 69 matching lines @@
 }
 #endif
 
 PluginHost::PluginHost() {
   InitializeHostFuncs();
 }
 
 PluginHost::~PluginHost() {
 }
 
-PluginHost *PluginHost::Singleton() {
+PluginHost* PluginHost::Singleton() {
   CR_DEFINE_STATIC_LOCAL(scoped_refptr<PluginHost>, singleton, ());
-  if (singleton.get() == NULL) {
+  if (singleton) {
     singleton = new PluginHost();
   }
 
-  DCHECK(singleton.get() != NULL);
-  return singleton;
+  DCHECK(singleton);
+  return singleton.get();
 }
 
 void PluginHost::InitializeHostFuncs() {
   memset(&host_funcs_, 0, sizeof(host_funcs_));
   host_funcs_.size = sizeof(host_funcs_);
   host_funcs_.version = (NP_VERSION_MAJOR << 8) | (NP_VERSION_MINOR);
 
   // The "basic" functions
   host_funcs_.geturl = &NPN_GetURL;
   host_funcs_.posturl = &NPN_PostURL;
@@ skipping 1045 matching lines @@
 }
 
 void NPN_URLRedirectResponse(NPP instance, void* notify_data, NPBool allow) {
   scoped_refptr<PluginInstance> plugin(FindInstance(instance));
   if (plugin.get()) {
     plugin->URLRedirectResponse(!!allow, notify_data);
   }
 }
 
 }  // extern "C"