Issue #1667 - Part 2: Add MacOS 11.0 Big Sur widget compatibility

This involves refactoring the vibrancy and OpenGL/Pixel rendering changes contained
in the following Mozilla meta bugs: 1496823 and 1491445
Also add Big Sur to the features tests and update popup menu look and feel based
on Mozilla bug 1656301.

1 files changed, 4 insertions, 1 deletions

diff --git a/widget/cocoa/nsCocoaWindow.h b/widget/cocoa/nsCocoaWindow.h
index 6338f474d..1913696b8 100644
--- a/widget/cocoa/nsCocoaWindow.h
+++ b/widget/cocoa/nsCocoaWindow.h
@@ -359,7 +359,8 @@ protected:
   nsresult             CreateNativeWindow(const NSRect &aRect,
                                           nsBorderStyle aBorderStyle,
                                           bool aRectIsFrameRect);
-  nsresult             CreatePopupContentView(const LayoutDeviceIntRect &aRect);
+  nsresult             CreatePopupContentView(const LayoutDeviceIntRect &aRect,
+                                              nsWidgetInitData* aInitData);
   void                 DestroyNativeWindow();
   void                 AdjustWindowShadow();
   void                 SetWindowBackgroundBlur();
@@ -416,6 +417,8 @@ protected:
   bool                 mInReportMoveEvent; // true if in a call to ReportMoveEvent().
   bool                 mInResize; // true if in a call to DoResize().
 
+  bool                 mAlwaysOnTop;
+
   int32_t              mNumModalDescendents;
   InputContext         mInputContext;
 };