Always enable FCM on Windows.

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index 63e94dfdc9038d3957ab8449eecdeab137890707..d5089d1a0c9b4969bb5c5608492c56e1397f52fc 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -742,12 +742,6 @@ const char kSingleProcess[]                 = "single-process";
 // http://crbug.com/159215.
 const char kSitePerProcess[]                = "site-per-process";
 
-// Skip gpu info collection, blacklist loading, and blacklist auto-update
-// scheduling at browser startup time.
-// Therefore, all GPU features are available, and about:gpu page shows empty
-// content. The switch is intended only for tests.
-const char kSkipGpuDataLoading[]            = "skip-gpu-data-loading";
-
 // Specifies the request key for the continuous speech recognition webservice.
 const char kSpeechRecognitionWebserviceKey[] = "speech-service-key";