Add flag to enable immersive fullscreen for v2 apps

chrome/browser/ui/views/frame/immersive_mode_controller_ash.cc

 // Copyright 2012 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 "chrome/browser/ui/views/frame/immersive_mode_controller_ash.h"
 
 #include "ash/shell.h"
 #include "ash/wm/window_state.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/ui/fullscreen/fullscreen_controller.h"
@@ skipping 190 matching lines @@
 }
 
 void ImmersiveModeControllerAsh::SetVisibleFraction(double visible_fraction) {
   if (visible_fraction_ != visible_fraction) {
     visible_fraction_ = visible_fraction;
     browser_view_->Layout();
   }
 }
 
 std::vector<gfx::Rect>
-ImmersiveModeControllerAsh::GetVisibleBoundsInScreen() {
+ImmersiveModeControllerAsh::GetVisibleBoundsInScreen() const {
   views::View* top_container_view = browser_view_->top_container();
   gfx::Rect top_container_view_bounds = top_container_view->GetVisibleBounds();
   // TODO(tdanderson): Implement View::ConvertRectToScreen().
   gfx::Point top_container_view_bounds_in_screen_origin(
       top_container_view_bounds.origin());
   views::View::ConvertPointToScreen(top_container_view,
       &top_container_view_bounds_in_screen_origin);
   gfx::Rect top_container_view_bounds_in_screen(
       top_container_view_bounds_in_screen_origin,
       top_container_view_bounds.size());
@@ skipping 36 matching lines @@
   // shelf displays a 3px 'light bar' when it is closed. When in immersive
   // browser fullscreen and tab fullscreen, hide the shelf completely and
   // prevent it from being revealed.
   ash::wm::GetWindowState(native_window_)->set_hide_shelf_when_fullscreen(
       in_tab_fullscreen);
   ash::Shell::GetInstance()->UpdateShelfVisibility();
 
   if (use_tab_indicators_ != used_tab_indicators)
     LayoutBrowserRootView();
 }