Fix linker warning in broadcast_channel.mojom-blink.obj.

third_party/WebKit/Source/build/scripts/templates/RuntimeEnabledFeatures.h.tmpl

Index: third_party/WebKit/Source/build/scripts/templates/RuntimeEnabledFeatures.h.tmpl
diff --git a/third_party/WebKit/Source/build/scripts/templates/RuntimeEnabledFeatures.h.tmpl b/third_party/WebKit/Source/build/scripts/templates/RuntimeEnabledFeatures.h.tmpl
index d531966917b1c4c856446a25cadb6c71d76d4766..6c7098043b41e414a2a930ff4b63c3723c5c57c6 100644
--- a/third_party/WebKit/Source/build/scripts/templates/RuntimeEnabledFeatures.h.tmpl
+++ b/third_party/WebKit/Source/build/scripts/templates/RuntimeEnabledFeatures.h.tmpl
@@ -6,7 +6,7 @@
 
 #include <string>
 
-#include "platform/PlatformExport.h"
+#include "platform/RuntimeEnabledFeaturesExport.h"
 #include "wtf/Allocator.h"
 #include "wtf/Forward.h"
 #include "wtf/build_config.h"
@@ -15,10 +15,10 @@ namespace blink {
 
 // A class that stores static enablers for all experimental features.
 
-class PLATFORM_EXPORT RuntimeEnabledFeatures {
+class RUNTIME_ENABLED_FEATURES_EXPORT RuntimeEnabledFeatures {
     STATIC_ONLY(RuntimeEnabledFeatures);
 public:
-    class PLATFORM_EXPORT Backup {
+    class RUNTIME_ENABLED_FEATURES_EXPORT Backup {
     public:
         explicit Backup();
         void restore();