DCHECK while invoking extension infobar context menu for the second time

DCHECK failure occurs while trying to destroy the 
ExtensionContextMenuModel object in InfoBarGtk without calling 
RefCounted::Release().

Since ExtensionContextMenuModel is a refcounted class, its object needs
to be managed correctly with RefCounted::AddRef() & RefCounted::Release().
Moving the ownership of Menu Model to the sub classes of InfoBarGtk
to achieve this.

BUG=172921
TEST= Context menu opens for 'Sandwich' infobar sample extension without crash for the second time.

Review URL: https://chromiumcodereview.appspot.com/12092047

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@180898 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/gtk/infobars/extension_infobar_gtk.cc

@@ -157,7 +157,7 @@ Browser* ExtensionInfoBarGtk::GetBrowser() {
   return BrowserWindowGtk::GetBrowserWindowForNativeWindow(parent)->browser();
 }
 
-ui::MenuModel* ExtensionInfoBarGtk::BuildMenuModel() {
+ExtensionContextMenuModel* ExtensionInfoBarGtk::BuildMenuModel() {
   const extensions::Extension* extension = delegate_->extension();
   if (!extension->ShowConfigureContextMenus())
     return NULL;
@@ -182,13 +182,13 @@ gboolean ExtensionInfoBarGtk::OnButtonPress(GtkWidget* widget,
   if (event->button != 1)
     return FALSE;
 
-  ui::MenuModel* model = BuildMenuModel();
-  if (!model)
+  context_menu_model_ = BuildMenuModel();
+  if (!context_menu_model_)
     return FALSE;
 
   gtk_chrome_button_set_paint_state(GTK_CHROME_BUTTON(widget),
                                     GTK_STATE_ACTIVE);
-  ShowMenuWithModel(widget, this, model);
+  ShowMenuWithModel(widget, this, context_menu_model_);
 
   return TRUE;
 }

chrome/browser/ui/gtk/infobars/extension_infobar_gtk.h

@@ -12,6 +12,7 @@
 #include "chrome/browser/ui/gtk/menu_gtk.h"
 #include "ui/gfx/gtk_util.h"
 
+class ExtensionContextMenuModel;
 class ExtensionResource;
 class ExtensionViewGtk;
 class MenuGtk;
@@ -47,7 +48,7 @@ class ExtensionInfoBarGtk : public InfoBarGtk,
 
   // Returns the context menu model for this extension. Can be NULL if
   // extension context menus are disabled.
-  ui::MenuModel* BuildMenuModel();
+  ExtensionContextMenuModel* BuildMenuModel();
 
   CHROMEGTK_CALLBACK_1(ExtensionInfoBarGtk, void, OnSizeAllocate,
                        GtkAllocation*);
@@ -74,6 +75,9 @@ class ExtensionInfoBarGtk : public InfoBarGtk,
   // child properties. Reparenting becomes easier too.
   GtkWidget* alignment_;
 
+  // The model for the current menu displayed.
+  scoped_refptr<ExtensionContextMenuModel> context_menu_model_;
+
   base::WeakPtrFactory<ExtensionInfoBarGtk> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionInfoBarGtk);

chrome/browser/ui/gtk/infobars/infobar_gtk.cc

@@ -193,8 +193,7 @@ void InfoBarGtk::AddLabelWithInlineLink(const string16& display_text,
 void InfoBarGtk::ShowMenuWithModel(GtkWidget* sender,
                                    MenuGtk::Delegate* delegate,
                                    ui::MenuModel* model) {
-  menu_model_.reset(model);
-  menu_.reset(new MenuGtk(delegate, menu_model_.get()));
+  menu_.reset(new MenuGtk(delegate, model));
   menu_->PopupForWidget(sender, 1, gtk_get_current_event_time());
 }
 
@@ -289,7 +288,6 @@ void InfoBarGtk::PlatformSpecificOnCloseSoon() {
   // We must close all menus and prevent any signals from being emitted while
   // we are animating the info bar closed.
   menu_.reset();
-  menu_model_.reset();
   signals_.reset();
 }
 

chrome/browser/ui/gtk/infobars/infobar_gtk.h

@@ -83,8 +83,7 @@ class InfoBarGtk : public InfoBar,
                               size_t link_offset,
                               GCallback callback);
 
-  // Shows the menu with |model| with the context of |sender|. InfobarGtk takes
-  // ownership of the model.
+  // Shows the menu with |model| with the context of |sender|.
   void ShowMenuWithModel(GtkWidget* sender,
                          MenuGtk::Delegate* delegate,
                          ui::MenuModel* model);
@@ -132,7 +131,6 @@ class InfoBarGtk : public InfoBar,
 
   // The current menu displayed. Can be null. We own this on the base class so
   // we can cancel the menu while we're closing.
-  scoped_ptr<ui::MenuModel> menu_model_;
   scoped_ptr<MenuGtk> menu_;
 
   DISALLOW_COPY_AND_ASSIGN(InfoBarGtk);

chrome/browser/ui/gtk/infobars/translate_infobar_base_gtk.cc

@@ -193,7 +193,8 @@ TranslateInfoBarDelegate* TranslateInfoBarBase::GetDelegate() {
 }
 
 void TranslateInfoBarBase::OnOptionsClicked(GtkWidget* sender) {
-  ShowMenuWithModel(sender, NULL, new OptionsMenuModel(GetDelegate()));
+  menu_model_.reset(new OptionsMenuModel(GetDelegate()));
+  ShowMenuWithModel(sender, NULL, menu_model_.get());
 }
 
 // TranslateInfoBarDelegate specific method:

chrome/browser/ui/gtk/infobars/translate_infobar_base_gtk.h

@@ -64,6 +64,9 @@ class TranslateInfoBarBase : public InfoBarGtk {
   // Changes the color of the background from normal to error color and back.
   scoped_ptr<ui::SlideAnimation> background_color_animation_;
 
+  // The model for the current menu displayed.
+  scoped_ptr<ui::MenuModel> menu_model_;
+
   DISALLOW_COPY_AND_ASSIGN(TranslateInfoBarBase);
 };