Remove implicit conversions from scoped_refptr to T* in content/renderer/media/

content/renderer/media/crypto/pepper_cdm_wrapper_impl.cc

 // Copyright 2014 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.
 
 #if defined(ENABLE_PEPPER_CDMS)
 #include "content/renderer/media/crypto/pepper_cdm_wrapper_impl.h"
 
 #include "content/renderer/pepper/pepper_plugin_instance_impl.h"
 #include "content/renderer/pepper/pepper_webplugin_impl.h"
 #include "third_party/WebKit/public/platform/WebString.h"
@@ skipping 21 matching lines @@
   if (!helper_plugin)
     return scoped_ptr<PepperCdmWrapper>();
 
   blink::WebPlugin* plugin = helper_plugin->getPlugin();
   DCHECK(!plugin->isPlaceholder());  // Prevented by Blink.
 
   // Only Pepper plugins are supported, so it must ultimately be a ppapi object.
   PepperWebPluginImpl* ppapi_plugin = static_cast<PepperWebPluginImpl*>(plugin);
   scoped_refptr<PepperPluginInstanceImpl> plugin_instance =
       ppapi_plugin->instance();
-  if (!plugin_instance)
+  if (!plugin_instance.get())
     return scoped_ptr<PepperCdmWrapper>();
 
   GURL url(plugin_instance->container()->element().document().url());
   CHECK_EQ(security_origin.GetOrigin(), url.GetOrigin())
       << "Pepper instance has a different origin than the EME call.";
 
   if (!plugin_instance->GetContentDecryptorDelegate())
     return scoped_ptr<PepperCdmWrapper>();
 
   return scoped_ptr<PepperCdmWrapper>(
       new PepperCdmWrapperImpl(helper_plugin.Pass(), plugin_instance));
 }
 
 PepperCdmWrapperImpl::PepperCdmWrapperImpl(
     ScopedHelperPlugin helper_plugin,
     const scoped_refptr<PepperPluginInstanceImpl>& plugin_instance)
     : helper_plugin_(helper_plugin.Pass()),
       plugin_instance_(plugin_instance) {
   DCHECK(helper_plugin_);
-  DCHECK(plugin_instance_);
+  DCHECK(plugin_instance_.get());
   // Plugin must be a CDM.
   DCHECK(plugin_instance_->GetContentDecryptorDelegate());
 }
 
 PepperCdmWrapperImpl::~PepperCdmWrapperImpl() {
   // Destroy the nested objects in reverse order.
   plugin_instance_ = NULL;
   helper_plugin_.reset();
 }
 
 ContentDecryptorDelegate* PepperCdmWrapperImpl::GetCdmDelegate() {
   return plugin_instance_->GetContentDecryptorDelegate();
 }
 
 }  // namespace content
 
 #endif  // defined(ENABLE_PEPPER_CDMS)