Exclude PluginService for builds with enable_plugins==0

chrome/browser/metrics/metrics_service.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.
 
 //------------------------------------------------------------------------------
 // Description of the life cycle of a instance of MetricsService.
 //
 //  OVERVIEW
 //
 // A MetricsService instance is typically created at application startup.  It
@@ skipping 968 matching lines @@
   target_loop->PostTask(FROM_HERE,
       base::Bind(&MetricsService::OnInitTaskGotHardwareClass,
           self, hardware_class));
 }
 
 void MetricsService::OnInitTaskGotHardwareClass(
     const std::string& hardware_class) {
   DCHECK_EQ(INIT_TASK_SCHEDULED, state_);
   hardware_class_ = hardware_class;
 
+#if defined(ENABLE_PLUGINS)
   // Start the next part of the init task: loading plugin information.
   PluginService::GetInstance()->GetPlugins(
       base::Bind(&MetricsService::OnInitTaskGotPluginInfo,
           self_ptr_factory_.GetWeakPtr()));
+#else
+  std::vector<webkit::WebPluginInfo> plugin_list_empty;
+  OnInitTaskGotPluginInfo(plugin_list_empty);
+#endif  // defined(ENABLE_PLUGINS)
 }
 
 void MetricsService::OnInitTaskGotPluginInfo(
     const std::vector<webkit::WebPluginInfo>& plugins) {
   DCHECK_EQ(INIT_TASK_SCHEDULED, state_);
   plugins_ = plugins;
 
   // Schedules a task on a blocking pool thread to gather Google Update
   // statistics (requires Registry reads).
   BrowserThread::PostBlockingPoolTask(
@@ skipping 984 matching lines @@
   if (local_state) {
     const PrefService::Preference* uma_pref =
         local_state->FindPreference(prefs::kMetricsReportingEnabled);
     if (uma_pref) {
       bool success = uma_pref->GetValue()->GetAsBoolean(&result);
       DCHECK(success);
     }
   }
   return result;
 }