Turn //mojo/public/cpp/bindings and //mojo/public/cpp/system into components

mojo/public/cpp/bindings/sync_call_restrictions.h

Index: mojo/public/cpp/bindings/sync_call_restrictions.h
diff --git a/mojo/public/cpp/bindings/sync_call_restrictions.h b/mojo/public/cpp/bindings/sync_call_restrictions.h
index e8fc1c4f49585cadde4c2289ad7cae41ec924d8f..dccd73095193d5463e2f0c99fc7b36251648fc49 100644
--- a/mojo/public/cpp/bindings/sync_call_restrictions.h
+++ b/mojo/public/cpp/bindings/sync_call_restrictions.h
@@ -7,6 +7,7 @@
 
 #include "base/macros.h"
 #include "base/threading/thread_restrictions.h"
+#include "mojo/public/cpp/bindings/bindings_export.h"
 
 #if (!defined(NDEBUG) || defined(DCHECK_ALWAYS_ON))
 #define ENABLE_SYNC_CALL_RESTRICTIONS 1
@@ -36,7 +37,7 @@ namespace mojo {
 // a very compelling reason to disregard that (which should be very very rare),
 // you can override it by constructing a ScopedAllowSyncCall object, which
 // allows making sync calls on the current thread during its lifetime.
-class SyncCallRestrictions {
+class MOJO_CPP_BINDINGS_EXPORT SyncCallRestrictions {
  public:
 #if ENABLE_SYNC_CALL_RESTRICTIONS
   // Checks whether the current thread is allowed to make sync calls, and causes