Fix status bubble shadow being opaque, which made the bubble appear to be off...

chrome/browser/views/status_bubble_views.h

Index: chrome/browser/views/status_bubble_views.h
===================================================================
--- chrome/browser/views/status_bubble_views.h	(revision 12889)
+++ chrome/browser/views/status_bubble_views.h	(working copy)
@@ -17,6 +17,9 @@
 // to allow users to see where hovered links point to.
 class StatusBubbleViews : public StatusBubble {
  public:
+  // How wide the bubble's shadow is.
+  static const int kShadowThickness;
+
   explicit StatusBubbleViews(views::Widget* frame);
   ~StatusBubbleViews();