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..e407719ba736e5e7097c2bc4aa27ee4d594256d0 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";
 
@@ -935,6 +929,16 @@ const char kChildCleanExit[]                = "child-clean-exit";
 extern const char kTestCompositor[]         = "test-compositor";
 #endif
 
+#if defined(OS_LINUX) || defined(OS_MACOSX)
+// 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.
+// TODO(gab): Remove this flag entriely and enable GPU blacklist usage on all
+// the bots (http://crbug.com/277242).
+const char kSkipGpuDataLoading[]            = "skip-gpu-data-loading";
+#endif
+
 // Don't dump stuff here, follow the same order as the header.
 
 // Allows filters (SkImageFilter objects) to be sent between processes over IPC