Remove TabContents from TabModalConfirmDialog.

chrome/browser/ui/cocoa/tab_modal_confirm_dialog_mac.h

Index: chrome/browser/ui/cocoa/tab_modal_confirm_dialog_mac.h
diff --git a/chrome/browser/ui/cocoa/tab_modal_confirm_dialog_mac.h b/chrome/browser/ui/cocoa/tab_modal_confirm_dialog_mac.h
index 6c53bcf87e7e81f6c39e8890b0838871526e8431..8aa6fe28c39d6ddf204537062192340d84a53e1a 100644
--- a/chrome/browser/ui/cocoa/tab_modal_confirm_dialog_mac.h
+++ b/chrome/browser/ui/cocoa/tab_modal_confirm_dialog_mac.h
@@ -13,9 +13,12 @@
 #include "chrome/browser/ui/tab_modal_confirm_dialog.h"
 
 @class ConstrainedWindowAlert;
-class TabContents;
 class TabModalConfirmDialogDelegate;
 
+namespace content {
+class WebContents;
+}
+
 // Displays a tab-modal dialog, i.e. a dialog that will block the current page
 // but still allow the user to switch to a different page.
 // To display the dialog, allocate this object on the heap. It will open the
@@ -26,7 +29,7 @@ class TabModalConfirmDialogMac
       public ConstrainedWindowMacDelegateSystemSheet {
  public:
   TabModalConfirmDialogMac(TabModalConfirmDialogDelegate* delegate,
-                           TabContents* tab_contents);
+                           content::WebContents* web_contents);
 
   // ConstrainedWindowDelegateMacSystemSheet:
   virtual void DeleteDelegate() OVERRIDE;
@@ -51,7 +54,7 @@ class TabModalConfirmDialogMac2 : public TabModalConfirmDialog,
                                   public ConstrainedWindowMacDelegate2 {
  public:
   TabModalConfirmDialogMac2(TabModalConfirmDialogDelegate* delegate,
-                            TabContents* tab_contents);
+                            content::WebContents* web_contents);
 
  private:
   virtual ~TabModalConfirmDialogMac2();