Bug 448767 - Make -moz-system-metric(mac-graphite-theme) live, r+sr=roc

widget/src/cocoa/nsChildView.mm

@@ -2248,6 +2248,10 @@ NSEvent* gLastDragEvent = nil;
                                                           kCorePboardType_urld,
                                                           kCorePboardType_urln,
                                                           nil]];
+  [[NSNotificationCenter defaultCenter] addObserver:self
+                                           selector:@selector(controlTintChanged)
+                                               name:NSControlTintDidChangeNotification
+                                             object:nil];
 
   return self;
 
@@ -2267,6 +2271,8 @@ NSEvent* gLastDragEvent = nil;
   if (sLastViewEntered == self)
     sLastViewEntered = nil;
 
+  [[NSNotificationCenter defaultCenter] removeObserver:self];
+
   [super dealloc];    
 
   // This sets the current port to _savePort.
@@ -2317,6 +2323,16 @@ NSEvent* gLastDragEvent = nil;
 }
 
 
+- (void)controlTintChanged
+{
+  if (!mGeckoChild)
+    return;
+
+  nsGUIEvent guiEvent(PR_TRUE, NS_THEMECHANGED, mGeckoChild);
+  mGeckoChild->DispatchWindowEvent(guiEvent);
+}
+
+
 - (void)setNeedsPendingDisplay
 {
   NS_OBJC_BEGIN_TRY_ABORT_BLOCK;