Remove TabContents from TabStripModelObserver::ActiveTabChanged.

chrome/browser/ui/cocoa/tabs/tab_strip_model_observer_bridge.mm

 // Copyright (c) 2012 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/tabs/tab_strip_model_observer_bridge.h"
 
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
 
 using content::WebContents;
@@ skipping 42 matching lines @@
 }
 
 void TabStripModelObserverBridge::TabDetachedAt(WebContents* contents,
                                                 int index) {
   if ([controller_ respondsToSelector:
           @selector(tabDetachedWithContents:atIndex:)]) {
     [controller_ tabDetachedWithContents:contents atIndex:index];
   }
 }
 
-void TabStripModelObserverBridge::ActiveTabChanged(
-    TabContents* old_contents,
-    TabContents* new_contents,
-    int index,
-    bool user_gesture) {
+void TabStripModelObserverBridge::ActiveTabChanged(WebContents* old_contents,
+                                                   WebContents* new_contents,
+                                                   int index,
+                                                   bool user_gesture) {
   if ([controller_ respondsToSelector:
           @selector(activateTabWithContents:previousContents:atIndex:
                     userGesture:)]) {
-    [controller_ activateTabWithContents:WebContentsOf(new_contents)
-                        previousContents:WebContentsOf(old_contents)
+    [controller_ activateTabWithContents:new_contents
+                        previousContents:old_contents
                                  atIndex:index
                              userGesture:user_gesture];
   }
 }
 
 void TabStripModelObserverBridge::TabMoved(TabContents* contents,
                                            int from_index,
                                            int to_index) {
   if ([controller_ respondsToSelector:
        @selector(tabMovedWithContents:fromIndex:toIndex:)]) {
@@ skipping 41 matching lines @@
 
 void TabStripModelObserverBridge::TabStripEmpty() {
   if ([controller_ respondsToSelector:@selector(tabStripEmpty)])
     [controller_ tabStripEmpty];
 }
 
 void TabStripModelObserverBridge::TabStripModelDeleted() {
   if ([controller_ respondsToSelector:@selector(tabStripModelDeleted)])
     [controller_ tabStripModelDeleted];
 }