Makes notifications animate from the bottom of the screen (as was

chrome/browser/notifications/balloon.h

Index: chrome/browser/notifications/balloon.h
diff --git a/chrome/browser/notifications/balloon.h b/chrome/browser/notifications/balloon.h
index 70fc30abb650b0fdb584bbfdff2d86a7034b4ed0..7847538bad68a66ca3503be7efb98f916dfd45ed 100644
--- a/chrome/browser/notifications/balloon.h
+++ b/chrome/browser/notifications/balloon.h
@@ -42,6 +42,9 @@ class BalloonView {
   // The host for the view's contents. May be NULL if an implementation does
   // not have a host associated with it (i.e. does not do html rendering).
   virtual BalloonHost* GetHost() const = 0;
+
+  // Returns the horizontal margin the content is inset by.
+  static int GetHorizontalMargin();
 };
 
 // Represents a Notification on the screen.