[Extensions] Add logic for when to show the toolbar redesign bubble.

chrome/browser/ui/cocoa/extensions/extension_toolbar_icon_surfacing_bubble_mac.mm

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/ui/cocoa/extensions/extension_toolbar_icon_surfacing_bubble_mac.h"
 
 #include "base/mac/foundation_util.h"
 #import "chrome/browser/ui/cocoa/info_bubble_view.h"
 #import "chrome/browser/ui/cocoa/info_bubble_window.h"
 #include "chrome/browser/ui/toolbar/toolbar_actions_bar_bubble_delegate.h"
@@ skipping 53 matching lines @@
     [window setCanBecomeKeyWindow:NO];
 
     ui::NativeTheme* nativeTheme = ui::NativeTheme::instance();
     [[self bubble] setAlignment:info_bubble::kAlignRightEdgeToAnchorEdge];
     [[self bubble] setArrowLocation:info_bubble::kNoArrow];
     [[self bubble] setBackgroundColor:
         gfx::SkColorToCalibratedNSColor(nativeTheme->GetSystemColor(
             ui::NativeTheme::kColorId_DialogBackground))];
 
     [self layout];
+
+    delegate_->OnToolbarActionsBarBubbleShown();
   }
   return self;
 }
 
 // Private /////////////////////////////////////////////////////////////////////
 
 - (void)windowWillClose:(NSNotification*)notification {
   if (!acknowledged_) {
     delegate_->OnToolbarActionsBarBubbleClosed(
         ToolbarActionsBarBubbleDelegate::DISMISSED);
@@ skipping 137 matching lines @@
   [selectedTitle addAttribute:NSForegroundColorAttributeName
                         value:selectedTitleColor
                         range:NSMakeRange(0, [title length])];
 
   [[self cell] drawTitle:selectedTitle.get()
                withFrame:bounds
                   inView:self];
 }
 
 @end