Revert "remove redundant api GetFrameSize."

This reverts commit 05e6c9cfd9.

native/Avalonia.Native/src/OSX/WindowBaseImpl.h

@@ -72,6 +72,8 @@ BEGIN_INTERFACE_MAP()
 
     virtual HRESULT GetClientSize(AvnSize *ret) override;
 
+    virtual HRESULT GetFrameSize(AvnSize *ret) override;
+
     virtual HRESULT GetScaling(double *ret) override;
 
     virtual HRESULT SetMinMaxSize(AvnSize minSize, AvnSize maxSize) override;

native/Avalonia.Native/src/OSX/WindowBaseImpl.mm

@@ -191,7 +191,22 @@ HRESULT WindowBaseImpl::GetClientSize(AvnSize *ret) {
         if (ret == nullptr)
             return E_POINTER;
 
-        auto frame = [View.frame];
+        auto frame = [View frame];
+        ret->Width = frame.size.width;
+        ret->Height = frame.size.height;
+
+        return S_OK;
+    }
+}
+
+HRESULT WindowBaseImpl::GetFrameSize(AvnSize *ret) {
+    START_COM_CALL;
+
+    @autoreleasepool {
+        if (ret == nullptr)
+            return E_POINTER;
+
+        auto frame = [Window frame];
         ret->Width = frame.size.width;
         ret->Height = frame.size.height;
 

src/Avalonia.Native/avn.idl

@@ -504,6 +504,7 @@ interface IAvnWindowBase : IUnknown
      HRESULT Close();
      HRESULT Activate();
      HRESULT GetClientSize(AvnSize*ret);
+     HRESULT GetFrameSize(AvnSize*ret);
      HRESULT GetScaling(double*ret);
      HRESULT SetMinMaxSize(AvnSize minSize, AvnSize maxSize);
      HRESULT Resize(double width, double height, AvnPlatformResizeReason reason);