Don't order the bubble window front; it shows up just fine.

chrome/browser/cocoa/status_bubble_mac.mm

Index: chrome/browser/cocoa/status_bubble_mac.mm
===================================================================
--- chrome/browser/cocoa/status_bubble_mac.mm	(revision 12584)
+++ chrome/browser/cocoa/status_bubble_mac.mm	(working copy)
@@ -213,7 +213,6 @@
   [parent_ addChildWindow:window_ ordered:NSWindowAbove];
 
   [window_ setAlphaValue:0.0f];
-  [window_ orderFront:nil];

[Scott Hess - ex-Googler, 2009/04/01 00:36:39]

I noticed this with the omnibox things, too.  I don't understand child/parent
windows :-).  Anyhow, does this change imply you want to move the
-setAlpheValue: call above the -addChildWindow:ordered: call?  The old code
looks like it thinks that that is set before the window becomes visible.

[Avi (use Gerrit), 2009/04/01 00:48:06]

That might be a good idea, but for now this seems to work OK. If it turns out to
be flashing, I'll do that change.

 
   offset_ = 0;
   [view setStyle:STYLE_STANDARD];