Convert enable_plugins to a buildflag header.

components/autofill/content/browser/risk/fingerprint.cc

Index: components/autofill/content/browser/risk/fingerprint.cc
diff --git a/components/autofill/content/browser/risk/fingerprint.cc b/components/autofill/content/browser/risk/fingerprint.cc
index acac2f15ad8d2ddd1412132a9e9806033e73dd93..5700fcd6a76094fb5ef1fed5f92728c37510bd65 100644
--- a/components/autofill/content/browser/risk/fingerprint.cc
+++ b/components/autofill/content/browser/risk/fingerprint.cc
@@ -41,6 +41,7 @@
 #include "device/geolocation/geolocation_provider.h"
 #include "device/geolocation/geoposition.h"
 #include "gpu/config/gpu_info.h"
+#include "ppapi/features/features.h"
 #include "third_party/WebKit/public/platform/WebRect.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
@@ -293,7 +294,7 @@ FingerprintDataLoader::FingerprintDataLoader(
     gpu_data_manager_->RequestCompleteGpuInfoIfNeeded();
   }
 
-#if defined(ENABLE_PLUGINS)
+#if BUILDFLAG(ENABLE_PLUGINS)
   // Load plugin data.
   content::PluginService::GetInstance()->GetPlugins(
       base::Bind(&FingerprintDataLoader::OnGotPlugins,