fix: revert macOS content protection logic refactor (#46889)

Revert "refactor: use upstream content protection logic on macOS (#46813)"

This reverts commit 34adb976b6.

Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com>
Co-authored-by: Keeley Hammond <khammond@slack-corp.com>

shell/browser/native_window.cc

@@ -26,7 +26,6 @@
 #include "shell/common/options_switches.h"
 #include "ui/base/hit_test.h"
 #include "ui/compositor/compositor.h"
-#include "ui/views/widget/native_widget_private.h"
 #include "ui/views/widget/widget.h"
 
 #if !BUILDFLAG(IS_MAC)
@@ -815,20 +814,6 @@ void NativeWindow::HandlePendingFullscreenTransitions() {
   SetFullScreen(next_transition);
 }
 
-void NativeWindow::SetContentProtection(bool enable) {
-#if !BUILDFLAG(IS_LINUX)
-  widget()->native_widget_private()->SetAllowScreenshots(!enable);
-#endif
-}
-
-bool NativeWindow::IsContentProtected() const {
-#if !BUILDFLAG(IS_LINUX)
-  return !widget()->native_widget_private()->AreScreenshotsAllowed();
-#else  // Not implemented on Linux
-  return false;
-#endif
-}
-
 bool NativeWindow::IsTranslucent() const {
   // Transparent windows are translucent
   if (transparent()) {

shell/browser/native_window.h

@@ -186,8 +186,8 @@ class NativeWindow : public base::SupportsUserData,
   virtual void SetDocumentEdited(bool edited) {}
   virtual bool IsDocumentEdited() const;
   virtual void SetIgnoreMouseEvents(bool ignore, bool forward) = 0;
-  void SetContentProtection(bool enable);
+  virtual void SetContentProtection(bool enable) = 0;
-  bool IsContentProtected() const;
+  virtual bool IsContentProtected() const = 0;
   virtual void SetFocusable(bool focusable) {}
   virtual bool IsFocusable() const;
   virtual void SetMenu(ElectronMenuModel* menu) {}

shell/browser/native_window_mac.h

@@ -109,6 +109,8 @@ class NativeWindowMac : public NativeWindow,
   void SetIgnoreMouseEvents(bool ignore, bool forward) override;
   bool IsHiddenInMissionControl() const override;
   void SetHiddenInMissionControl(bool hidden) override;
+  void SetContentProtection(bool enable) override;
+  bool IsContentProtected() const override;
   void SetFocusable(bool focusable) override;
   bool IsFocusable() const override;
   void SetParentWindow(NativeWindow* parent) override;

shell/browser/native_window_mac.mm

@@ -1171,6 +1171,15 @@ void NativeWindowMac::SetIgnoreMouseEvents(bool ignore, bool forward) {
   }
 }
 
+void NativeWindowMac::SetContentProtection(bool enable) {
+  [window_
+      setSharingType:enable ? NSWindowSharingNone : NSWindowSharingReadOnly];
+}
+
+bool NativeWindowMac::IsContentProtected() const {
+  return [window_ sharingType] == NSWindowSharingNone;
+}
+
 void NativeWindowMac::SetFocusable(bool focusable) {
   // No known way to unfocus the window if it had the focus. Here we do not
   // want to call Focus(false) because it moves the window to the back, i.e.

shell/browser/native_window_views.cc

@@ -44,6 +44,7 @@
 #include "ui/ozone/public/ozone_platform.h"
 #include "ui/views/background.h"
 #include "ui/views/controls/webview/webview.h"
+#include "ui/views/widget/native_widget_private.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/window/client_view.h"
 #include "ui/wm/core/shadow_types.h"
@@ -1324,6 +1325,20 @@ void NativeWindowViews::SetIgnoreMouseEvents(bool ignore, bool forward) {
 #endif
 }
 
+void NativeWindowViews::SetContentProtection(bool enable) {
+#if BUILDFLAG(IS_WIN)
+  widget()->native_widget_private()->SetAllowScreenshots(!enable);
+#endif
+}
+
+bool NativeWindowViews::IsContentProtected() const {
+#if BUILDFLAG(IS_WIN)
+  return !widget()->native_widget_private()->AreScreenshotsAllowed();
+#else  // Not implemented on Linux
+  return false;
+#endif
+}
+
 void NativeWindowViews::SetFocusable(bool focusable) {
   widget()->widget_delegate()->SetCanActivate(focusable);
 #if BUILDFLAG(IS_WIN)

shell/browser/native_window_views.h

@@ -115,6 +115,8 @@ class NativeWindowViews : public NativeWindow,
   void SetOpacity(const double opacity) override;
   double GetOpacity() const override;
   void SetIgnoreMouseEvents(bool ignore, bool forward) override;
+  void SetContentProtection(bool enable) override;
+  bool IsContentProtected() const override;
   void SetFocusable(bool focusable) override;
   bool IsFocusable() const override;
   void SetMenu(ElectronMenuModel* menu_model) override;