Implement WebContentsModalDialogManagerDelegate for ShellWindow

chrome/browser/ui/views/extensions/native_app_window_views.h

Index: chrome/browser/ui/views/extensions/native_app_window_views.h
diff --git a/chrome/browser/ui/views/extensions/native_app_window_views.h b/chrome/browser/ui/views/extensions/native_app_window_views.h
index 58e1f5901ecc25aec70f27593d719f9b1ab11381..50ea4826eceff09349658730ed26e8b9e308f1d1 100644
--- a/chrome/browser/ui/views/extensions/native_app_window_views.h
+++ b/chrome/browser/ui/views/extensions/native_app_window_views.h
@@ -5,6 +5,7 @@
 #ifndef CHROME_BROWSER_UI_VIEWS_EXTENSIONS_NATIVE_APP_WINDOW_VIEWS_H_
 #define CHROME_BROWSER_UI_VIEWS_EXTENSIONS_NATIVE_APP_WINDOW_VIEWS_H_
 
+#include "base/observer_list.h"
 #include "chrome/browser/ui/base_window.h"
 #include "chrome/browser/ui/extensions/native_app_window.h"
 #include "chrome/browser/ui/extensions/shell_window.h"
@@ -135,6 +136,14 @@ class NativeAppWindowViews : public NativeAppWindow,
   virtual void RenderViewHostChanged() OVERRIDE;
   virtual gfx::Insets GetFrameInsets() const OVERRIDE;
 
+  // WebContentsModalDialogHost implementation.
+  virtual gfx::Point GetDialogPosition(const gfx::Size& size) OVERRIDE;
+
+  virtual void AddObserver(
+      WebContentsModalDialogHostObserver* observer) OVERRIDE;
+  virtual void RemoveObserver(
+      WebContentsModalDialogHostObserver* observer) OVERRIDE;
+
   Profile* profile() { return shell_window_->profile(); }
   content::WebContents* web_contents() {
     return shell_window_->web_contents();
@@ -164,6 +173,8 @@ class NativeAppWindowViews : public NativeAppWindow,
 
   base::WeakPtrFactory<NativeAppWindowViews> weak_ptr_factory_;
 
+  ObserverList<WebContentsModalDialogHostObserver> observer_list_;
+
   DISALLOW_COPY_AND_ASSIGN(NativeAppWindowViews);
 };