Introduce NativeWebContentsModalDialogManagerDelegate interface

chrome/browser/ui/web_contents_modal_dialog_manager.h

Index: chrome/browser/ui/web_contents_modal_dialog_manager.h
diff --git a/chrome/browser/ui/web_contents_modal_dialog_manager.h b/chrome/browser/ui/web_contents_modal_dialog_manager.h
index 93840953947bef594cc8631c8e82d7e5207d7067..98b1eac26379dfd6428171125b4a3a7a70e5fd11 100644
--- a/chrome/browser/ui/web_contents_modal_dialog_manager.h
+++ b/chrome/browser/ui/web_contents_modal_dialog_manager.h
@@ -18,7 +18,8 @@ class WebContentsModalDialogManagerDelegate;
 
 // Per-WebContents class to manage WebContents-modal dialogs.
 class WebContentsModalDialogManager
-    : public content::WebContentsObserver,
+    : public NativeWebContentsModalDialogManagerDelegate,
+      public content::WebContentsObserver,
       public content::WebContentsUserData<WebContentsModalDialogManager> {
  public:
   virtual ~WebContentsModalDialogManager();
@@ -27,15 +28,12 @@ class WebContentsModalDialogManager
   void set_delegate(WebContentsModalDialogManagerDelegate* d) { delegate_ = d; }
 
   static NativeWebContentsModalDialogManager* CreateNativeManager(
-      WebContentsModalDialogManager* manager);
+      NativeWebContentsModalDialogManagerDelegate* native_delegate);
 
   // Adds the given dialog to the list of child dialogs. The dialog will notify
   // via WillClose() when it is being destroyed.
   void AddDialog(WebContentsModalDialog* dialog);
 
-  // Called when a WebContentsModalDialogs we own is about to be closed.
-  void WillClose(WebContentsModalDialog* dialog);
-
   // Blocks/unblocks interaction with renderer process.
   void BlockWebContentsInteraction(bool blocked);
 
@@ -46,6 +44,10 @@ class WebContentsModalDialogManager
   // calling this function.
   void FocusTopmostDialog();
 
+  // Overriden from NativeWebContentsModalDialogManagerDelegate:
+  // Called when a WebContentsModalDialogs we own is about to be closed.
+  virtual void WillClose(WebContentsModalDialog* dialog) OVERRIDE;
+
   // For testing.
   class TestApi {
    public: