Mac: Speculative fix for tracking area crashes

chrome/browser/ui/cocoa/browser_window_controller.mm

Index: chrome/browser/ui/cocoa/browser_window_controller.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_controller.mm b/chrome/browser/ui/cocoa/browser_window_controller.mm
index 1afc9064b7faf1a63575a9dad972909599b4eb54..74b527fc400e1eebe06da60f837692ac78c89caa 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller.mm
+++ b/chrome/browser/ui/cocoa/browser_window_controller.mm
@@ -395,6 +395,16 @@ using content::WebContents;
                NSWindowCollectionBehaviorFullScreenAuxiliary;
     [window setCollectionBehavior:collectionBehavior];
 
+    // NSTrackingInVisibleRect doesn't work correctly with Lion's window
+    // resizing, http://crbug.com/176725 /
+    // http://openradar.appspot.com/radar?id=2773401 .
+    // Setting this property will send mouseMoved events to the window's first
+    // responder, so it will avoid the problem as long as the
+    // RenderWidgetHostViewCocoa is first responder.
+    // The bug will still be there if the omnibox has focus (Safari suffers
+    // from the same problem).
+    [window setAcceptsMouseMovedEvents:YES];
+
     [self layoutSubviews];
 
     // For a popup window, |desiredContentRect| contains the desired height of