Revert of [Extensions] Make extension message bubble factory platform-abstract

chrome/browser/ui/views/toolbar/toolbar_view.cc

Index: chrome/browser/ui/views/toolbar/toolbar_view.cc
diff --git a/chrome/browser/ui/views/toolbar/toolbar_view.cc b/chrome/browser/ui/views/toolbar/toolbar_view.cc
index df70ca44a09a23a539a0f0b654a5b3dd11a9b069..7c4073b7579642d390de9376c031c1822264e429 100644
--- a/chrome/browser/ui/views/toolbar/toolbar_view.cc
+++ b/chrome/browser/ui/views/toolbar/toolbar_view.cc
@@ -31,6 +31,7 @@
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/toolbar/wrench_menu_model.h"
 #include "chrome/browser/ui/view_ids.h"
+#include "chrome/browser/ui/views/extensions/extension_message_bubble_view.h"
 #include "chrome/browser/ui/views/extensions/extension_popup.h"
 #include "chrome/browser/ui/views/frame/browser_view.h"
 #include "chrome/browser/ui/views/location_bar/page_action_image_view.h"
@@ -129,7 +130,10 @@
       browser_actions_(NULL),
       app_menu_(NULL),
       browser_(browser),
-      badge_controller_(browser->profile(), this) {
+      badge_controller_(browser->profile(), this),
+      extension_message_bubble_factory_(
+          new extensions::ExtensionMessageBubbleFactory(browser->profile(),
+                                                        this)) {
   set_id(VIEW_ID_TOOLBAR);
 
   SetEventTargeter(
@@ -264,6 +268,14 @@
         l10n_util::GetStringUTF16(IDS_ACCNAME_TOOLTIP_BACK));
     forward_->SetTooltipText(
         l10n_util::GetStringUTF16(IDS_ACCNAME_TOOLTIP_FORWARD));
+  }
+}
+
+void ToolbarView::OnWidgetVisibilityChanged(views::Widget* widget,
+                                            bool visible) {
+  if (visible) {
+    // Safe to call multiple times; the bubble will only appear once.
+    extension_message_bubble_factory_->MaybeShow(app_menu_);
   }
 }