Changes instant so that the newly created tab has a new id. Doing

chrome/browser/ui/cocoa/tab_strip_model_observer_bridge.mm

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/cocoa/tab_strip_model_observer_bridge.h"
 
 #include "chrome/browser/tabs/tab_strip_model.h"
 
 TabStripModelObserverBridge::TabStripModelObserverBridge(TabStripModel* model,
                                                          id controller)
@@ skipping 68 matching lines @@
                                                TabChangeType change_type) {
   if ([controller_ respondsToSelector:
           @selector(tabChangedWithContents:atIndex:changeType:)]) {
     [controller_ tabChangedWithContents:contents
                                 atIndex:index
                              changeType:change_type];
   }
 }
 
 void TabStripModelObserverBridge::TabReplacedAt(
+    TabStripModel* tab_strip_model,
     TabContentsWrapper* old_contents,
     TabContentsWrapper* new_contents,
     int index) {
   if ([controller_ respondsToSelector:
           @selector(tabReplacedWithContents:previousContents:atIndex:)]) {
     [controller_ tabReplacedWithContents:new_contents
                         previousContents:old_contents
                                  atIndex:index];
   } else {
     TabChangedAt(new_contents, index, ALL);
@@ skipping 10 matching lines @@
 
 void TabStripModelObserverBridge::TabStripEmpty() {
   if ([controller_ respondsToSelector:@selector(tabStripEmpty)])
     [controller_ tabStripEmpty];
 }
 
 void TabStripModelObserverBridge::TabStripModelDeleted() {
   if ([controller_ respondsToSelector:@selector(tabStripModelDeleted)])
     [controller_ tabStripModelDeleted];
 }