bug 1210884 - expose the action interface on proxied accessibles r=davidb

accessible/atk/AccessibleWrap.cpp

@@ -1128,6 +1128,10 @@ GetInterfacesForProxy(ProxyAccessible* aProxy, uint32_t aInterfaces)
     interfaces |= 1 << MAI_INTERFACE_SELECTION;
   }
 
+  if (aInterfaces & Interfaces::ACTION) {
+    interfaces |= 1 << MAI_INTERFACE_ACTION;
+  }
+
   return interfaces;
 }
 

accessible/ipc/DocAccessibleChild.cpp

@@ -50,6 +50,10 @@ InterfacesFor(Accessible* aAcc)
     interfaces |= Interfaces::SELECTION;
   }
 
+  if (aAcc->ActionCount()) {
+    interfaces |= Interfaces::ACTION;
+  }
+
   return interfaces;
 }
 

accessible/ipc/ProxyAccessible.h

@@ -395,6 +395,7 @@ enum Interfaces
   TABLECELL = 32,
   DOCUMENT = 64,
   SELECTION = 128,
+  ACTION = 256,
 };
 
 }