libmojo: Uprev the library to r456626 from Chromium

Pulled the latest and greatest version of libmojo from Chromium.

The merge was done against r456626 which corresponds to git commit
08266b3fca707804065a2cfd60331722ade41969 of Mar 14, 2017

Notable changes are:
- generated binding files are now split in 2 files, interface.mojom.h
  and interface.mojom-shared.h

Change-Id: Idcfd27310e2c9d3c452b671c7ff7a755c3963618

1 files changed, 13 insertions, 4 deletions

diff --git a/mojo/public/cpp/bindings/lib/control_message_proxy.h b/mojo/public/cpp/bindings/lib/control_message_proxy.h
index 5ec6ddc..2f9314e 100644
--- a/mojo/public/cpp/bindings/lib/control_message_proxy.h
+++ b/mojo/public/cpp/bindings/lib/control_message_proxy.h
@@ -7,8 +7,9 @@
 
 #include <stdint.h>
 
-#include "base/callback_forward.h"
+#include "base/callback.h"
 #include "base/macros.h"
+#include "mojo/public/cpp/bindings/bindings_export.h"
 #include "mojo/public/cpp/bindings/lib/serialization_context.h"
 
 namespace mojo {
@@ -18,18 +19,26 @@ class MessageReceiverWithResponder;
 namespace internal {
 
 // Proxy for request messages defined in interface_control_messages.mojom.
-class ControlMessageProxy {
+class MOJO_CPP_BINDINGS_EXPORT ControlMessageProxy {
  public:
   // Doesn't take ownership of |receiver|. It must outlive this object.
   explicit ControlMessageProxy(MessageReceiverWithResponder* receiver);
+  ~ControlMessageProxy();
 
   void QueryVersion(const base::Callback<void(uint32_t)>& callback);
   void RequireVersion(uint32_t version);
 
- protected:
+  void FlushForTesting();
+  void OnConnectionError();
+
+ private:
+  void RunFlushForTestingClosure();
+
   // Not owned.
   MessageReceiverWithResponder* receiver_;
-  SerializationContext context_;
+  bool encountered_error_ = false;
+
+  base::Closure run_loop_quit_closure_;
 
   DISALLOW_COPY_AND_ASSIGN(ControlMessageProxy);
 };