Add flag to enable immersive fullscreen for v2 apps

ash/wm/caption_buttons/maximize_bubble_controller.cc

 // Copyright 2013 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.
 
 #include "ash/wm/caption_buttons/maximize_bubble_controller.h"
 
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/caption_buttons/frame_maximize_button.h"
@@ skipping 800 matching lines @@
   // Tell the parent to destroy us (if this didn't happen yet).
   if (timer_) {
     timer_.reset(NULL);
     // Informs the owner that the menu is gone and requests |this| destruction.
     frame_maximize_button_->DestroyMaximizeMenu();
     // Note: After this call |this| is destroyed.
   }
 }
 
 void MaximizeBubbleController::CreateBubble() {
-  if (!bubble_)
+  if (!bubble_) {
     bubble_ = new Bubble(this, appearance_delay_ms_, snap_type_for_creation_);
+    frame_maximize_button_->OnMaximizeBubbleShown(bubble_->GetWidget());
+  }
 
   timer_->Stop();
 }
 
 BubbleDialogButton::BubbleDialogButton(
     BubbleContentsButtonRow* button_row,
     int normal_image,
     int hovered_image,
     int pressed_image)
     : views::ImageButton(button_row),
@@ skipping 33 matching lines @@
   if (!GetBoundsInScreen().Contains(screen_location))
     button_row_->ButtonHovered(NULL);
   else
     button_row_->ButtonHovered(this);
 
   // Pass the event on to the normal handler.
   return views::ImageButton::OnMouseDragged(event);
 }
 
 }  // namespace ash