Convert enable_plugins to a buildflag header.

chrome/browser/metrics/chrome_metrics_service_client.h

 // 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.
 
 #ifndef CHROME_BROWSER_METRICS_CHROME_METRICS_SERVICE_CLIENT_H_
 #define CHROME_BROWSER_METRICS_CHROME_METRICS_SERVICE_CLIENT_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <queue>
 #include <string>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "build/build_config.h"
 #include "chrome/browser/metrics/metrics_memory_details.h"
 #include "components/metrics/metrics_service_client.h"
 #include "components/metrics/profiler/tracking_synchronizer_observer.h"
 #include "components/metrics/proto/system_profile.pb.h"
 #include "components/omnibox/browser/omnibox_event_global_tracker.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
+#include "ppapi/features/features.h"
 
 class AntiVirusMetricsProvider;
 class ChromeOSMetricsProvider;
 class GoogleUpdateMetricsProviderWin;
 class PluginMetricsProvider;
 class PrefRegistrySimple;
 class PrefService;
 
 #if !defined(OS_CHROMEOS)
 class SigninStatusMetricsProvider;
@@ skipping 134 matching lines @@
   // Indicates that collect final metrics step is running.
   bool waiting_for_collect_final_metrics_step_;
 
   // Number of async histogram fetch requests in progress.
   int num_async_histogram_fetches_in_progress_;
 
   // The ProfilerMetricsProvider instance that was registered with
   // MetricsService. Has the same lifetime as |metrics_service_|.
   metrics::ProfilerMetricsProvider* profiler_metrics_provider_;
 
-#if defined(ENABLE_PLUGINS)
+#if BUILDFLAG(ENABLE_PLUGINS)
   // The PluginMetricsProvider instance that was registered with
   // MetricsService. Has the same lifetime as |metrics_service_|.
   PluginMetricsProvider* plugin_metrics_provider_;
 #endif
 
 #if defined(OS_WIN)
   // The GoogleUpdateMetricsProviderWin instance that was registered with
   // MetricsService. Has the same lifetime as |metrics_service_|.
   GoogleUpdateMetricsProviderWin* google_update_metrics_provider_;
 
@@ skipping 29 matching lines @@
   // Whether this client has already uploaded profiler data during this session.
   // Profiler data is uploaded at most once per session.
   bool has_uploaded_profiler_data_;
 
   base::WeakPtrFactory<ChromeMetricsServiceClient> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeMetricsServiceClient);
 };
 
 #endif  // CHROME_BROWSER_METRICS_CHROME_METRICS_SERVICE_CLIENT_H_