Bug 1406822: Implement a11y::HandlerProvider::GetEffectiveOutParamIid; r=Jamie

MozReview-Commit-ID: BKH3ooMQvN1

--HG--
extra : rebase_source : 50b666c3366e4f354b61ec2c3a37bf7f83c5f362

accessible/ipc/win/HandlerProvider.cpp

@@ -9,6 +9,8 @@
 #include "mozilla/a11y/HandlerProvider.h"
 
 #include "Accessible2_3.h"
+#include "AccessibleTable.h"
+#include "AccessibleTable2.h"
 #include "HandlerData.h"
 #include "HandlerData_i.c"
 #include "mozilla/Assertions.h"
@@ -214,6 +216,18 @@ HandlerProvider::MarshalAs(REFIID aIid)
   return aIid;
 }
 
+REFIID
+HandlerProvider::GetEffectiveOutParamIid(REFIID aCallIid,
+                                         ULONG aCallMethod)
+{
+  if (aCallIid == IID_IAccessibleTable || aCallIid == IID_IAccessibleTable2) {
+    return IID_IAccessible2_3;
+  }
+
+  MOZ_ASSERT(false);
+  return IID_IUnknown;
+}
+
 HRESULT
 HandlerProvider::NewInstance(REFIID aIid,
                              mscom::InterceptorTargetPtr<IUnknown> aTarget,

accessible/ipc/win/HandlerProvider.h

@@ -7,7 +7,7 @@
 #ifndef mozilla_a11y_HandlerProvider_h
 #define mozilla_a11y_HandlerProvider_h
 
-#include "handler/AccessibleHandler.h"
+#include "mozilla/a11y/AccessibleHandler.h"
 #include "mozilla/AlreadyAddRefed.h"
 #include "mozilla/Atomics.h"
 #include "mozilla/mscom/IHandlerProvider.h"
@@ -44,6 +44,8 @@ public:
   STDMETHODIMP GetHandlerPayloadSize(NotNull<DWORD*> aOutPayloadSize) override;
   STDMETHODIMP WriteHandlerPayload(NotNull<IStream*> aStream) override;
   STDMETHODIMP_(REFIID) MarshalAs(REFIID aIid) override;
+  STDMETHODIMP_(REFIID) GetEffectiveOutParamIid(REFIID aCallIid,
+                                                ULONG aCallMethod) override;
   STDMETHODIMP NewInstance(REFIID aIid,
                            mscom::InterceptorTargetPtr<IUnknown> aTarget,
                            NotNull<mscom::IHandlerProvider**> aOutNewPayload) override;