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 "chrome/browser/app_mode/app_mode_utils.h"
@@ skipping 10 matching lines @@
 #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"
+#else
+#include "base/prefs/pref_service.h"
+#include "chrome/common/pref_names.h"
 #endif
 
 using content::RenderViewHost;
 using content::UserMetricsAction;
 using content::WebContents;
 
 FullscreenController::FullscreenController(Browser* browser)
     : ptr_factory_(this),
       browser_(browser),
       window_(browser->window()),
@@ skipping 504 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;
 
+#if !defined(OS_MACOSX)
+  // Do not enter fullscreen mode if disallowed by pref. This prevents the user
+  // from manually entering fullscreen mode and also disables kiosk mode on
+  // desktop platforms.
+  if (enter_fullscreen &&
+      !profile_->GetPrefs()->GetBoolean(prefs::kFullscreenAllowed)) {
+    return;
+  }
+#endif
+
   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());
 }