Bug 1036682 - Check that the ipdl connection is not lost before sending messages. r=bjacob

gfx/layers/ipc/LayerTransactionChild.cpp

@@ -18,6 +18,11 @@
 namespace mozilla {
 namespace layers {
 
+bool
+LayerTransactionChild::IPCOpen()
+{
+  return mIPCOpen && !mDestroyed && GetIPCChannel()->Connected();
+}
 
 void
 LayerTransactionChild::Destroy()

gfx/layers/ipc/LayerTransactionChild.h

@@ -40,7 +40,7 @@ public:
    */
   void Destroy();
 
-  bool IPCOpen() const { return mIPCOpen && !mDestroyed; }
+  bool IPCOpen();
 
   void SetForwarder(ShadowLayerForwarder* aForwarder)
   {

ipc/glue/MessageChannel.h

@@ -80,6 +80,8 @@ class MessageChannel : HasResultCodes
     // Close the underlying transport channel.
     void Close();
 
+    bool Connected() const;
+
     // Force the channel to behave as if a channel error occurred. Valid
     // for process links only, not thread links.
     void CloseWithError();
@@ -343,8 +345,6 @@ class MessageChannel : HasResultCodes
         return mDispatchingSyncMessagePriority;
     }
 
-    bool Connected() const;
-
   private:
     // Executed on the IO thread.
     void NotifyWorkerThread();