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

mojo/public/cpp/bindings/pipe_control_message_proxy.h

Index: mojo/public/cpp/bindings/pipe_control_message_proxy.h
diff --git a/mojo/public/cpp/bindings/pipe_control_message_proxy.h b/mojo/public/cpp/bindings/pipe_control_message_proxy.h
index 7f3e006e09da297e23ad2f33e8853f85359a972f..25ee203846915732478fea0ba43c0544979f34cc 100644
--- a/mojo/public/cpp/bindings/pipe_control_message_proxy.h
+++ b/mojo/public/cpp/bindings/pipe_control_message_proxy.h
@@ -6,6 +6,7 @@
 #define MOJO_PUBLIC_CPP_BINDINGS_PIPE_CONTROL_MESSAGE_PROXY_H_
 
 #include "base/macros.h"
+#include "mojo/public/cpp/bindings/bindings_export.h"
 #include "mojo/public/cpp/bindings/interface_id.h"
 #include "mojo/public/cpp/bindings/lib/serialization_context.h"
 
@@ -14,7 +15,7 @@ namespace mojo {
 class MessageReceiver;
 
 // Proxy for request messages defined in pipe_control_messages.mojom.
-class PipeControlMessageProxy {
+class MOJO_CPP_BINDINGS_EXPORT PipeControlMessageProxy {
  public:
   // Doesn't take ownership of |receiver|. It must outlive this object.
   explicit PipeControlMessageProxy(MessageReceiver* receiver);