Fixing problem with edge swipe exiting immersive mode

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 48 matching lines @@
   browser_view_ = browser_view;
   native_window_ = browser_view_->GetNativeWindow();
   controller_->Init(this, browser_view_->frame(),
       browser_view_->top_container());
 }
 
 void ImmersiveModeControllerAsh::SetEnabled(bool enabled) {
   if (controller_->IsEnabled() == enabled)
     return;
 
+  if (!browser_view_->browser()->is_app()) {
+    // Mark a browser window as an immersive mode window so that the
+    // window manager can treat it accordingly.
+    ash::wm::GetWindowState(native_window_)->set_immersive_mode(enabled);
+  }
+
   EnableWindowObservers(enabled);
 
   controller_->SetEnabled(browser_view_->browser()->is_app() ?
           ash::ImmersiveFullscreenController::WINDOW_TYPE_HOSTED_APP :
           ash::ImmersiveFullscreenController::WINDOW_TYPE_BROWSER
       , enabled);
 }
 
 bool ImmersiveModeControllerAsh::IsEnabled() const {
   return controller_->IsEnabled();
@@ skipping 162 matching lines @@
   // prevent it from being revealed.
   bool in_tab_fullscreen = content::Source<FullscreenController>(source)->
       IsWindowFullscreenForTabOrPending();
   ash::wm::GetWindowState(native_window_)->set_hide_shelf_when_fullscreen(
       in_tab_fullscreen);
   ash::Shell::GetInstance()->UpdateShelfVisibility();
 
   if (tab_indicator_visibility_changed)
     LayoutBrowserRootView();
 }