Add policy for fullscreen mode; disallow fullscreen in public sessions

chrome/browser/ui/fullscreen/fullscreen_controller.cc

 // Copyright (c) 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/fullscreen/fullscreen_controller.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
+#include "base/prefs/pref_service.h"
 #include "chrome/browser/app_mode/app_mode_utils.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/download/download_shelf.h"
 #include "chrome/browser/fullscreen.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
+#include "chrome/common/pref_names.h"
 #include "content/public/browser/navigation_details.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/browser/web_contents.h"
 
 #if defined(OS_MACOSX)
 #include "base/mac/mac_util.h"
@@ skipping 514 matching lines @@
     else
       enter_fullscreen |= window_->IsFullscreenWithChrome();
   }
 #endif
 
   // In kiosk mode, we always want to be fullscreen. When the browser first
   // starts we're not yet fullscreen, so let the initial toggle go through.
   if (chrome::IsRunningInAppMode() && window_->IsFullscreen())
     return;
 
+  // Do not enter fullscreen mode if disallowed by pref.
+  if (enter_fullscreen &&
+      !profile_->GetPrefs()->GetBoolean(prefs::kAllowFullscreen)) {
+    return;
+  }
+
   if (enter_fullscreen)
     EnterFullscreenModeInternal(option);
   else
     ExitFullscreenModeInternal();
 }
 
 void FullscreenController::EnterFullscreenModeInternal(
     FullscreenInternalOption option) {
   toggled_into_fullscreen_ = true;
   GURL url;
@@ skipping 88 matching lines @@
 
 ContentSetting
 FullscreenController::GetMouseLockSetting(const GURL& url) const {
   if (url.SchemeIsFile())
     return CONTENT_SETTING_ALLOW;
 
   HostContentSettingsMap* settings_map = profile_->GetHostContentSettingsMap();
   return settings_map->GetContentSetting(url, url,
       CONTENT_SETTINGS_TYPE_MOUSELOCK, std::string());
 }