Use StringPiece more in base::Value interfaces.

chrome/browser/ui/webui/plugins/plugins_handler.cc

 // Copyright 2016 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/ui/webui/plugins/plugins_handler.h"
 
 #include <memory>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 153 matching lines @@
       ->SetContentSettingCustomScope(
           ContentSettingsPattern::Wildcard(),
           ContentSettingsPattern::Wildcard(), CONTENT_SETTINGS_TYPE_PLUGINS,
           plugin.get(),
           allowed ? CONTENT_SETTING_ALLOW : CONTENT_SETTING_DEFAULT);
 
   // Keep track of the whitelist separately, so that we can distinguish plugins
   // whitelisted by the user from automatically whitelisted ones.
   DictionaryPrefUpdate update(profile->GetPrefs(),
                               prefs::kContentSettingsPluginWhitelist);
-  update->SetBoolean(plugin, allowed);
+  update->SetBoolean(plugin.get(), allowed);
 }
 
 void PluginsPageHandler::GetPluginsData(
     const GetPluginsDataCallback& callback) {
   if (weak_ptr_factory_.HasWeakPtrs())
     return;
 
   content::PluginService::GetInstance()->GetPlugins(
       base::Bind(&PluginsPageHandler::RespondWithPluginsData,
                  weak_ptr_factory_.GetWeakPtr(), callback));
@@ skipping 179 matching lines @@
   }
 
   if (plugins_enabled_by_policy)
     return "enabledByPolicy";
   if (plugins_disabled_by_policy)
     return "disabledByPolicy";
   if (plugins_managed_by_policy)
     return "managedByPolicy";
   return group_enabled ? "enabledByUser" : "disabledByUser";
 }