More NativeWidget -> Widget notifications: visibility, minimize.

ui/views/widget/native_widget_mac.mm

Index: ui/views/widget/native_widget_mac.mm
diff --git a/ui/views/widget/native_widget_mac.mm b/ui/views/widget/native_widget_mac.mm
index b6aa7176a1163772804329ac8577fa0cf8146f31..e5e6de94b093142b71454b628ed8bb221d5d7e48 100644
--- a/ui/views/widget/native_widget_mac.mm
+++ b/ui/views/widget/native_widget_mac.mm
@@ -43,7 +43,7 @@
          relativeTo:(NSInteger)otherWindowNumber {
   [[self viewsNSWindowDelegate] onWindowOrderWillChange:orderingMode];
   [super orderWindow:orderingMode relativeTo:otherWindowNumber];
-  [[self viewsNSWindowDelegate] onWindowOrderChanged];
+  [[self viewsNSWindowDelegate] onWindowOrderChanged:nil];
 }
 
 @end
@@ -340,7 +340,7 @@ void NativeWidgetMac::Show() {
 }
 
 void NativeWidgetMac::Hide() {
-  NOTIMPLEMENTED();
+  [GetNativeWindow() orderOut:nil];
 }
 
 void NativeWidgetMac::ShowMaximizedWithBounds(
@@ -428,7 +428,13 @@ void NativeWidgetMac::Maximize() {
 }
 
 void NativeWidgetMac::Minimize() {
-  NOTIMPLEMENTED();
+  NSWindow* window = GetNativeWindow();
+  // Calling performMiniaturize: will momentarily highlight the button, but
+  // AppKit will reject it if there is no miniaturize button.
+  if ([window styleMask] & NSMiniaturizableWindowMask)
+    [window performMiniaturize:nil];
+  else
+    [window miniaturize:nil];
 }
 
 bool NativeWidgetMac::IsMaximized() const {
@@ -438,12 +444,11 @@ bool NativeWidgetMac::IsMaximized() const {
 }
 
 bool NativeWidgetMac::IsMinimized() const {
-  NOTIMPLEMENTED();
-  return false;
+  return [GetNativeWindow() isMiniaturized];
 }
 
 void NativeWidgetMac::Restore() {
-  NOTIMPLEMENTED();
+  [GetNativeWindow() deminiaturize:nil];
 }
 
 void NativeWidgetMac::SetFullscreen(bool fullscreen) {