Make TabContents own its infobar delegates....

chrome/browser/cocoa/infobar_controller_unittest.mm

Index: chrome/browser/cocoa/infobar_controller_unittest.mm
===================================================================
--- chrome/browser/cocoa/infobar_controller_unittest.mm	(revision 65711)
+++ chrome/browser/cocoa/infobar_controller_unittest.mm	(working copy)
@@ -30,10 +30,11 @@
 @end
 
 
-// Calls to removeDelegate: normally start an animation, which removes the
-// infobar completely when finished.  For unittesting purposes, we create a mock
-// container which calls close: immediately, rather than kicking off an
-// animation.
+// Calls to removeDelegate: normally (a) start an animation, which removes the
+// infobar completely when finished; and (b) synchronously close the delegate.
+// For unittesting purposes, we create a mock container which calls close:
+// immediately, rather than kicking off an animation; the delegate is still
+// closed synchronously.
 @interface InfoBarContainerTest : NSObject <InfoBarContainer> {
   InfoBarController* controller_;
 }
@@ -52,6 +53,7 @@
 
 - (void)removeDelegate:(InfoBarDelegate*)delegate {
   [controller_ close];
+  delegate->InfoBarClosed();
 }
 
 - (void)removeController:(InfoBarController*)controller {